What is a chorion protein gene and a metallothionein gene?
Q. Question asks: "An example of gene amplification occurs in Drosophila at which locus? (A) Maternal effect genes (B) Metallothionein gene (C) Chorion protein gene (D) Antennapedia (E) Hox The correct answer given is C. What is a chorion protein gene and a metallothionein gene? Do they have any distinct characteristics or functions?
Asked by HonestOpinion - Sat Jun 7 08:06:43 2008 - - 1 Answers - 0 Comments
A. The gene responsible for the production of chorion protein is called chorion protein gene, The gene responsible for coding of metallothionein is called metallothionein gene. Chorion gene is amplified naturally during embryogenesis and metallothionein gene under stress caused by heavy metals such as cadmium.
Answered by Ishan26 - Sat Jun 7 08:34:14 2008
Q. Question asks: "An example of gene amplification occurs in Drosophila at which locus? (A) Maternal effect genes (B) Metallothionein gene (C) Chorion protein gene (D) Antennapedia (E) Hox The correct answer given is C. What is a chorion protein gene and a metallothionein gene? Do they have any distinct characteristics or functions?
Asked by HonestOpinion - Sat Jun 7 08:06:43 2008 - - 1 Answers - 0 Comments
A. The gene responsible for the production of chorion protein is called chorion protein gene, The gene responsible for coding of metallothionein is called metallothionein gene. Chorion gene is amplified naturally during embryogenesis and metallothionein gene under stress caused by heavy metals such as cadmium.
Answered by Ishan26 - Sat Jun 7 08:34:14 2008
Explain how a gene for pest resistance inserted into plants is indirectly beneficial?
Q. I have a bio-tech project about gene transfer and specifically, "how inserting genes for pest resistance can be indirectly beneficial?". Please leave a link or the topic itself. Thanks.
Asked by tRisha - Sun Oct 5 00:10:30 2008 - - 1 Answers - 0 Comments
A. I don't have any kind of link, but if you think about it it isn't too complicated. Assume normal plants have no resistance to pests. You would have to use pesticides to keep the pests off. Now what if you put in a gene that could kill pests while keeping the plant safe. This would eliminate the need for pesticides since the plant would naturally do the killing of the pests.
Answered by physicsdude2014 - Sun Oct 5 00:18:39 2008
Q. I have a bio-tech project about gene transfer and specifically, "how inserting genes for pest resistance can be indirectly beneficial?". Please leave a link or the topic itself. Thanks.
Asked by tRisha - Sun Oct 5 00:10:30 2008 - - 1 Answers - 0 Comments
A. I don't have any kind of link, but if you think about it it isn't too complicated. Assume normal plants have no resistance to pests. You would have to use pesticides to keep the pests off. Now what if you put in a gene that could kill pests while keeping the plant safe. This would eliminate the need for pesticides since the plant would naturally do the killing of the pests.
Answered by physicsdude2014 - Sun Oct 5 00:18:39 2008
How is a duplicate gene initially expressed in a diploid?
Q. As I understand, a duplicate gene is initially single allelic. That is, it exists on just the one chromosome. So, if A is the parent gene and B is the duplicate daughter, locus B has only one allele: AA - B So will the allele on locus B be always dominant if it is always single?
Asked by Pastor Winthrop XXX - Fri Apr 10 15:12:11 2009 - - 2 Answers - 0 Comments
A. Not necessarily. It is probably recessive or even silent. Depending on how the gene was duplicated, it may not even have a promoter or enhancer elements, making it effectively a pseudogene paralogue This is more likely if it was snagged by a retrotransposon and reinserted far away.. It is still transcribed as normal, then it depends on if dosage of the gene product matters. For most metabolic enzymes, it wouldn't matter too much, but a regulatory protein could have a more dramatic effect. It's also possible the gene is now under the control of a different promoter, which can have a dramatic phenotype, depending on what the gene is.
Answered by Weise Ente - Fri Apr 10 15:25:36 2009
Q. As I understand, a duplicate gene is initially single allelic. That is, it exists on just the one chromosome. So, if A is the parent gene and B is the duplicate daughter, locus B has only one allele: AA - B So will the allele on locus B be always dominant if it is always single?
Asked by Pastor Winthrop XXX - Fri Apr 10 15:12:11 2009 - - 2 Answers - 0 Comments
A. Not necessarily. It is probably recessive or even silent. Depending on how the gene was duplicated, it may not even have a promoter or enhancer elements, making it effectively a pseudogene paralogue This is more likely if it was snagged by a retrotransposon and reinserted far away.. It is still transcribed as normal, then it depends on if dosage of the gene product matters. For most metabolic enzymes, it wouldn't matter too much, but a regulatory protein could have a more dramatic effect. It's also possible the gene is now under the control of a different promoter, which can have a dramatic phenotype, depending on what the gene is.
Answered by Weise Ente - Fri Apr 10 15:25:36 2009
How does gene determine trait and what is the social implication of epigenetics?
Q. 1) How does gene determine a trait in an individual? 2)What is the societal implication of epigenetics?
Asked by galgal - Wed Aug 26 13:20:39 2009 - - 1 Answers - 0 Comments
A. Gene determines trait in such sense that, if you have recessive genes or X linked recessive genes for a trait then you will get it. For example If colour blindness was passed to you through your mother then you have colour blindness. So this mutation or recessive trait is encoded in your DNA and presented in you. Epigenetics studies the idea that there can be changes to DNA. Epigenetics literally translates into Above genetics. Therefore even encoded properties such as agouti trait in mice can be changed by the change in environment. Tehre are classical studies about how if an agouti mice is fed a diet high in methyls it supresses the agouti gene and the mice changes both color and is not obese anymore. Therefore what is the societal… [cont.]
Answered by salar m - Wed Aug 26 13:29:03 2009
Q. 1) How does gene determine a trait in an individual? 2)What is the societal implication of epigenetics?
Asked by galgal - Wed Aug 26 13:20:39 2009 - - 1 Answers - 0 Comments
A. Gene determines trait in such sense that, if you have recessive genes or X linked recessive genes for a trait then you will get it. For example If colour blindness was passed to you through your mother then you have colour blindness. So this mutation or recessive trait is encoded in your DNA and presented in you. Epigenetics studies the idea that there can be changes to DNA. Epigenetics literally translates into Above genetics. Therefore even encoded properties such as agouti trait in mice can be changed by the change in environment. Tehre are classical studies about how if an agouti mice is fed a diet high in methyls it supresses the agouti gene and the mice changes both color and is not obese anymore. Therefore what is the societal… [cont.]
Answered by salar m - Wed Aug 26 13:29:03 2009
What is the difference between gene conversion, horizontal gene transfer, and point mutation?
Q. I would prefer a non-biology explanation. That is, given a set of 16s genes of a bacterial species, can we determine if the (few) variation between the genes are caused by gene conversion/horizontal gene transfer/point mutation just by statistical evidence? I think I was supposed to mention somewhere that I had a set of nucleotide sequences of the 16s gene.
Asked by farf - Wed Nov 5 11:15:50 2008 - - 1 Answers - 1 Comments
A. You have a gene conversion if you can demonstrate crossing over of a large DNA sequence, usually during binary fission, significantly changing the sequence of the bacterial DNA. You have horizontal gene transfer if you can demonstrate that a DNA sequence from a different species has inserted within the bacterial species' genome. You have a point mutation if you can demonstrate that just one nucleotide in the DNA sequence has changed. Gene conversion is an event in DNA genetic recombination, which occurs at high frequencies during meiotic division but which also occurs in somatic cells. It is a process by which DNA sequence information is transferred from one DNA helix (which remains unchanged) to another DNA helix, whose sequence is… [cont.]
Answered by LAlawMedMBA - Wed Nov 12 16:08:56 2008
Q. I would prefer a non-biology explanation. That is, given a set of 16s genes of a bacterial species, can we determine if the (few) variation between the genes are caused by gene conversion/horizontal gene transfer/point mutation just by statistical evidence? I think I was supposed to mention somewhere that I had a set of nucleotide sequences of the 16s gene.
Asked by farf - Wed Nov 5 11:15:50 2008 - - 1 Answers - 1 Comments
A. You have a gene conversion if you can demonstrate crossing over of a large DNA sequence, usually during binary fission, significantly changing the sequence of the bacterial DNA. You have horizontal gene transfer if you can demonstrate that a DNA sequence from a different species has inserted within the bacterial species' genome. You have a point mutation if you can demonstrate that just one nucleotide in the DNA sequence has changed. Gene conversion is an event in DNA genetic recombination, which occurs at high frequencies during meiotic division but which also occurs in somatic cells. It is a process by which DNA sequence information is transferred from one DNA helix (which remains unchanged) to another DNA helix, whose sequence is… [cont.]
Answered by LAlawMedMBA - Wed Nov 12 16:08:56 2008
How many alleles for a particular gene does a diploid cell and a haploid cell contain?
Q. How many alleles for a particular gene does a diploid cell contain? How many alleles for a gene does a haploid cell contain?
Asked by vansishan - Tue Dec 30 21:28:05 2008 - - 3 Answers - 0 Comments
A. Diploid and haploid refer to the number of chromosomes a cell has. Most of the bodies cells are diploid and have two sets of chromosomes. One set came from the individuals mother (egg) and the other set came from the father (sperm). Haploid cells on the other hand, only have one set of chromosomes. Sperm and egg cells are haploid so that when they combine they form a normal diploid individual. Since a diploid cell has two sets of chromosomes it has two copies of each gene. Since it has two copies of each gene, it has two alleles of each gene. A haploid cell only has one copy of each gene, and therefore, only one allele.
Answered by DMartinez - Tue Dec 30 21:39:53 2008
Q. How many alleles for a particular gene does a diploid cell contain? How many alleles for a gene does a haploid cell contain?
Asked by vansishan - Tue Dec 30 21:28:05 2008 - - 3 Answers - 0 Comments
A. Diploid and haploid refer to the number of chromosomes a cell has. Most of the bodies cells are diploid and have two sets of chromosomes. One set came from the individuals mother (egg) and the other set came from the father (sperm). Haploid cells on the other hand, only have one set of chromosomes. Sperm and egg cells are haploid so that when they combine they form a normal diploid individual. Since a diploid cell has two sets of chromosomes it has two copies of each gene. Since it has two copies of each gene, it has two alleles of each gene. A haploid cell only has one copy of each gene, and therefore, only one allele.
Answered by DMartinez - Tue Dec 30 21:39:53 2008
How can a gene be mutated with no resulting change in the protein that is produced from that gene?
Q. How can a gene be mutated with no resulting change in the protein that is produced from that gene? a. RNA polymerase can edit the mutation from the mRNA produced during translation. b. An entire codon has been removed. c. A codon has changed, but it codes for he same amino acid as the original codon. d. The mutation is at the active site of the protein. e. This is impossible. All mutations, by definition, result in altered proteins.
Asked by whizz - Sat Oct 6 17:43:37 2007 - - 2 Answers - 0 Comments
A. As stated above, the answer is C. The reason being that there can be several different codons of RNA that code for the same amino acid. For instance: CGU, CGC, CGA, CGG, AGA, & AGG all code for arginine. Therefore the mutaction could change a nucleotide, but not the amino acid. For instance, changing the last letter in codon CGU from a U to a C (mutated codon=CGC) would not change the resulting amino acid in the protein. A codon to amino acid conversion table can be found here:
Answered by TinklePuff741 - Sun Oct 7 20:59:22 2007
Q. How can a gene be mutated with no resulting change in the protein that is produced from that gene? a. RNA polymerase can edit the mutation from the mRNA produced during translation. b. An entire codon has been removed. c. A codon has changed, but it codes for he same amino acid as the original codon. d. The mutation is at the active site of the protein. e. This is impossible. All mutations, by definition, result in altered proteins.
Asked by whizz - Sat Oct 6 17:43:37 2007 - - 2 Answers - 0 Comments
A. As stated above, the answer is C. The reason being that there can be several different codons of RNA that code for the same amino acid. For instance: CGU, CGC, CGA, CGG, AGA, & AGG all code for arginine. Therefore the mutaction could change a nucleotide, but not the amino acid. For instance, changing the last letter in codon CGU from a U to a C (mutated codon=CGC) would not change the resulting amino acid in the protein. A codon to amino acid conversion table can be found here:
Answered by TinklePuff741 - Sun Oct 7 20:59:22 2007
How is the Chinese gene pool compared to the Japanese and South Korean gene pools?
Q. If Chinese people REALLY look the same as Japanese people and South Korean people, how come China is underdeveloped whereas Japan and South Korea are economic, scientific, and technological powerhouses? Is the Chinese gene pool weaker than the Japanese and South Korean gene pools?
Asked by LOOOOOOOOOOOOOOOOOVE MEEEEEE!!!! - Thu Nov 13 10:08:59 2008 - - 1 Answers - 0 Comments
A. =.= You forgot Hong Kong a uber strong financial powerhouse. Taiwan, a center for electronics RnD. Singapore a top asian powerhouse. There countries are all on the top and predominately chinese. What an ignorant question. Confusing political policies with race. Nuff said.
Answered by potatoboy27 - Thu Nov 13 10:13:13 2008
Q. If Chinese people REALLY look the same as Japanese people and South Korean people, how come China is underdeveloped whereas Japan and South Korea are economic, scientific, and technological powerhouses? Is the Chinese gene pool weaker than the Japanese and South Korean gene pools?
Asked by LOOOOOOOOOOOOOOOOOVE MEEEEEE!!!! - Thu Nov 13 10:08:59 2008 - - 1 Answers - 0 Comments
A. =.= You forgot Hong Kong a uber strong financial powerhouse. Taiwan, a center for electronics RnD. Singapore a top asian powerhouse. There countries are all on the top and predominately chinese. What an ignorant question. Confusing political policies with race. Nuff said.
Answered by potatoboy27 - Thu Nov 13 10:13:13 2008
What does it mean to say that a genetic marker and a disease gene are closely linked?
Q. A.The sequence of the marker and the sequence of the disease gene are extremely similar. B.The marker lies within the coding region for the disease gene. C.The marker and the disease gene are on different chromosomes. D.The marker and the disease gene are in close physical proximity and tend to be inherited together.
Asked by student2009 - Wed Nov 18 17:14:40 2009 - - 1 Answers - 0 Comments
A. D. The marker and the disease gene are in close physical proximity (on the same gene) and tend to be inherited together.
Answered by kt - Wed Nov 18 17:19:19 2009
Q. A.The sequence of the marker and the sequence of the disease gene are extremely similar. B.The marker lies within the coding region for the disease gene. C.The marker and the disease gene are on different chromosomes. D.The marker and the disease gene are in close physical proximity and tend to be inherited together.
Asked by student2009 - Wed Nov 18 17:14:40 2009 - - 1 Answers - 0 Comments
A. D. The marker and the disease gene are in close physical proximity (on the same gene) and tend to be inherited together.
Answered by kt - Wed Nov 18 17:19:19 2009
How is the concept of gene flow related to the species concept?
Q. How is the concept of gene flow related to the species concept?
Asked by Luis Coco - Thu May 7 05:17:26 2009 - - 2 Answers - 0 Comments
A. Well, basically, gene flow is limited to animals who belong to the same species. This is because only animals who belong to the same species can reproduce and breed with each other.
Answered by MatT - Thu May 7 07:31:35 2009
Q. How is the concept of gene flow related to the species concept?
Asked by Luis Coco - Thu May 7 05:17:26 2009 - - 2 Answers - 0 Comments
A. Well, basically, gene flow is limited to animals who belong to the same species. This is because only animals who belong to the same species can reproduce and breed with each other.
Answered by MatT - Thu May 7 07:31:35 2009
What is the name of the gene that determines the number of limbs in a creature?
Q. I know it is the same gene in everything, but what is it called?
Asked by kucerakov - Tue Jan 15 03:18:24 2008 - - 1 Answers - 1 Comments
A. I'm not sure there is one gene that dictates the number of limbs in an organism. Embryo patterning is controlled by a complex interaction of many different genes. Most studies on this kind of thing have been done in Drosophila, while work the patterning of individual limbs has been done on the chick.
Answered by gribbling - Tue Jan 15 04:04:10 2008
Q. I know it is the same gene in everything, but what is it called?
Asked by kucerakov - Tue Jan 15 03:18:24 2008 - - 1 Answers - 1 Comments
A. I'm not sure there is one gene that dictates the number of limbs in an organism. Embryo patterning is controlled by a complex interaction of many different genes. Most studies on this kind of thing have been done in Drosophila, while work the patterning of individual limbs has been done on the chick.
Answered by gribbling - Tue Jan 15 04:04:10 2008
How do I find out the gene for a particular compound in a plant?
Q. If I have a compound extracted from a leaf, how can I find out the gene or the enzyme producing it. Pleas tell me various techniques concerning this or the site which would help me in this context.
Asked by vartika - Tue Apr 10 12:05:35 2007 - - 1 Answers - 0 Comments
A. Thats a pretty big question. A single gene will encode for a single protein, so if the compound you have is a protein then it should be fairly straighforward to identify the gene. You can partially sequence your protein and this will give you at least 10 of the amino acids, in sequence, from one end of your protein. From this you can work out the DNA sequence needed to code for this and use a database (like BLAST, found on the NCBI website) to search for likely genes. Thanks to organism sequencing programmes your gene will almost certainly have been sequenced already, even if no-one has ever actually studied it. However, if your compound is something else, say a metabolite like an alkaloid or a saponin or maybe some type of carbohydrate… [cont.]
Answered by Scot-Rob - Tue Apr 10 12:45:44 2007
Q. If I have a compound extracted from a leaf, how can I find out the gene or the enzyme producing it. Pleas tell me various techniques concerning this or the site which would help me in this context.
Asked by vartika - Tue Apr 10 12:05:35 2007 - - 1 Answers - 0 Comments
A. Thats a pretty big question. A single gene will encode for a single protein, so if the compound you have is a protein then it should be fairly straighforward to identify the gene. You can partially sequence your protein and this will give you at least 10 of the amino acids, in sequence, from one end of your protein. From this you can work out the DNA sequence needed to code for this and use a database (like BLAST, found on the NCBI website) to search for likely genes. Thanks to organism sequencing programmes your gene will almost certainly have been sequenced already, even if no-one has ever actually studied it. However, if your compound is something else, say a metabolite like an alkaloid or a saponin or maybe some type of carbohydrate… [cont.]
Answered by Scot-Rob - Tue Apr 10 12:45:44 2007
What determines whether or not a gene is dominant or recessive?
Q. Hi all, I am currently creating a learning game, whereby the pupil can customise the attributes of two plants. Once this is done, they may breed the plants and see the outcome. Although, I am just wondering if someone can clarify what determines whether or not a gene/trait is dominant or recessive? Any help is much appreciated, thank you. Nathan.
Asked by thedog - Wed Nov 5 05:19:23 2008 - - 2 Answers - 0 Comments
A. Genealogy and genetics are not the same thing. In genealogy we trace ancestry with documentation. You might get better answers if you go under Science and Mathematics and then Biology. Good Luck!
Answered by Shirley T - Wed Nov 5 20:20:40 2008
Q. Hi all, I am currently creating a learning game, whereby the pupil can customise the attributes of two plants. Once this is done, they may breed the plants and see the outcome. Although, I am just wondering if someone can clarify what determines whether or not a gene/trait is dominant or recessive? Any help is much appreciated, thank you. Nathan.
Asked by thedog - Wed Nov 5 05:19:23 2008 - - 2 Answers - 0 Comments
A. Genealogy and genetics are not the same thing. In genealogy we trace ancestry with documentation. You might get better answers if you go under Science and Mathematics and then Biology. Good Luck!
Answered by Shirley T - Wed Nov 5 20:20:40 2008
A gene that controls the ability to metabolize lactose is common in people in some parts of the world?
Q. and rare in other parts of the world. That gene is largely responsible for variations in the probability that a person will 1. become severely depressed. 2. have trouble sleeping when adjusting to a change in time zones. 3. enjoy dairy products as an adult. 4. suffer from migraine headaches.
Asked by Anne - Tue Mar 24 12:47:09 2009 - - 3 Answers - 0 Comments
A. 3. enjoy dairy products as an adult. Lactose intolerance is the inability to metabolize lactose, a sugar found in milk and other dairy products, because the required enzyme lactase is absent in the intestinal system or its availability is lowered.
Answered by Peter S - Tue Mar 24 12:58:40 2009
Q. and rare in other parts of the world. That gene is largely responsible for variations in the probability that a person will 1. become severely depressed. 2. have trouble sleeping when adjusting to a change in time zones. 3. enjoy dairy products as an adult. 4. suffer from migraine headaches.
Asked by Anne - Tue Mar 24 12:47:09 2009 - - 3 Answers - 0 Comments
A. 3. enjoy dairy products as an adult. Lactose intolerance is the inability to metabolize lactose, a sugar found in milk and other dairy products, because the required enzyme lactase is absent in the intestinal system or its availability is lowered.
Answered by Peter S - Tue Mar 24 12:58:40 2009
Is there a certain gene that makes a plant be able to grow in tropical climate?
Q. I need the gene or the characteristic that makes the plant grow in tropical climate. Is there such a gene?
Asked by LotsOfQuestions - Fri Feb 13 20:34:05 2009 - - 1 Answers - 0 Comments
A. I would imagine there are hundreds if not thousands of genes that have the culminating effect of making a plant winter hardy or not.
Answered by eigenfunxion - Fri Feb 13 20:40:52 2009
Q. I need the gene or the characteristic that makes the plant grow in tropical climate. Is there such a gene?
Asked by LotsOfQuestions - Fri Feb 13 20:34:05 2009 - - 1 Answers - 0 Comments
A. I would imagine there are hundreds if not thousands of genes that have the culminating effect of making a plant winter hardy or not.
Answered by eigenfunxion - Fri Feb 13 20:40:52 2009
What is the evolutionary purpose for the cilantro gene?
Q. There is a gene that makes some people hate cilantro, while others love it. Why do we have it? What is the evolutionary reason?
Asked by A Person - Fri May 14 18:14:42 2010 - - 1 Answers - 0 Comments
A. We have an assortment of receptors and one variant registers cilantro as bitter. Coriander (the leaf is cilantro) is in the family of plants which includes both carrots and hemlock. Survival could depend upon eating carrots and not hemlock. Some receptors have the potential to drive us away from food while others from poison. Survival was about finding a balance.
Answered by novangelis - Fri May 14 18:23:49 2010
Q. There is a gene that makes some people hate cilantro, while others love it. Why do we have it? What is the evolutionary reason?
Asked by A Person - Fri May 14 18:14:42 2010 - - 1 Answers - 0 Comments
A. We have an assortment of receptors and one variant registers cilantro as bitter. Coriander (the leaf is cilantro) is in the family of plants which includes both carrots and hemlock. Survival could depend upon eating carrots and not hemlock. Some receptors have the potential to drive us away from food while others from poison. Survival was about finding a balance.
Answered by novangelis - Fri May 14 18:23:49 2010
Is the gene found in German Shepherds concerning the ears dominant?
Q. We got a little German Shepherd-Labrador accident. He's eight weeks, which is when their ears could start to show if they're gonna stand, right? Well, we'd like them to stand, but I was just curious is that gene would even come into play. He's got the coloring and the face and his paws are freaking huge, but what's the chance of upright ears?
Asked by Spry - Sat Oct 18 20:06:32 2008 - - 5 Answers - 1 Comments
A. You have a LOT to learn about genetics! Far from your "that gene would even come into play", the situation is that everything about living organisms is set by their genes at the moment of conception, with environmental factors then either allowing that potential to be reached, or preventing it from being reached. You will find that far from there being a single "the gene" for ears, there is a multiplicity - some affect the length of the ear, some affect the amount of cone-shape in the ear, some affect how thick the leather of the ear is, some affect how low or high on the skull the ear is set, and those are affected by other factors such as how wide the skull is, how rigid is the main artery in the ear, how good is the calcium-phosphorus… [cont.]
Answered by King Les The Lofty - Sun Oct 19 02:39:03 2008
Q. We got a little German Shepherd-Labrador accident. He's eight weeks, which is when their ears could start to show if they're gonna stand, right? Well, we'd like them to stand, but I was just curious is that gene would even come into play. He's got the coloring and the face and his paws are freaking huge, but what's the chance of upright ears?
Asked by Spry - Sat Oct 18 20:06:32 2008 - - 5 Answers - 1 Comments
A. You have a LOT to learn about genetics! Far from your "that gene would even come into play", the situation is that everything about living organisms is set by their genes at the moment of conception, with environmental factors then either allowing that potential to be reached, or preventing it from being reached. You will find that far from there being a single "the gene" for ears, there is a multiplicity - some affect the length of the ear, some affect the amount of cone-shape in the ear, some affect how thick the leather of the ear is, some affect how low or high on the skull the ear is set, and those are affected by other factors such as how wide the skull is, how rigid is the main artery in the ear, how good is the calcium-phosphorus… [cont.]
Answered by King Les The Lofty - Sun Oct 19 02:39:03 2008
What is the difference between cental dogma of molecular biology and gene expression?
Q. According to the Central Dogma of Molecular Biology, the DNA makes RNA which in turn makes Protein. The gene expression also refferse to the same process in which the ultimate result is formation of proteins from genes(or DNA). The question is, how can these two terms be differentiated?
Asked by Bala - Tue May 2 13:21:19 2006 - - 2 Answers - 0 Comments
A. The two terms certainly are related. The central dogma is kind of a general principle about the flow of information in the cell. Gene expression refers to the process itself, and is therefore more comprehensive. For example, part of our knowledge about gene expression is that it is regulated based on the environment of the cell. This kind of feedback isn't really specified in the central dogma. Indeed there are "exceptions" to the central dogma. It doesn't account for the fact that much DNA codes for RNA only and that some of the "information" of the DNA is used only as a bonding site for regulatory elements. It also, of course, doesn't account for cases of reverse transcription.
Answered by dr. d. - Tue May 2 14:09:06 2006
Q. According to the Central Dogma of Molecular Biology, the DNA makes RNA which in turn makes Protein. The gene expression also refferse to the same process in which the ultimate result is formation of proteins from genes(or DNA). The question is, how can these two terms be differentiated?
Asked by Bala - Tue May 2 13:21:19 2006 - - 2 Answers - 0 Comments
A. The two terms certainly are related. The central dogma is kind of a general principle about the flow of information in the cell. Gene expression refers to the process itself, and is therefore more comprehensive. For example, part of our knowledge about gene expression is that it is regulated based on the environment of the cell. This kind of feedback isn't really specified in the central dogma. Indeed there are "exceptions" to the central dogma. It doesn't account for the fact that much DNA codes for RNA only and that some of the "information" of the DNA is used only as a bonding site for regulatory elements. It also, of course, doesn't account for cases of reverse transcription.
Answered by dr. d. - Tue May 2 14:09:06 2006
What is the difference between Gene Therapy and Stem Cell Technology?
Q. I am writing a speech to persuade people that Gene Therapy is a good thing. Does this mean i have to include Stem Cell Research? Are they two completely different concepts or branches of eachother? And what ARE the ethical concerns of Gene therapy? Playing God etc? Thank you =) xx
Asked by flowergirl - Mon Dec 15 13:44:42 2008 - - 2 Answers - 0 Comments
A. Stem cell research concentrates on the creation of stem cells that can be altered to possibly grow tissues & the like. Gene therapy concentrates on manipulating genes that are already there to find which ones cause certain diseases & conditions and then to hopefully find a way to eradicate them (think cancer, diabetes, etc.). They are not the same thing, but are somewhat related in that both are used to cure and/or prevent certain diseases & conditions - or that is the hope anyways. "Playing God" in relation to the above would be a completely different topic - I wouldn't include that in your speech unless that was the basis of your speech.
Answered by Flusterated - Mon Dec 15 13:59:53 2008
Q. I am writing a speech to persuade people that Gene Therapy is a good thing. Does this mean i have to include Stem Cell Research? Are they two completely different concepts or branches of eachother? And what ARE the ethical concerns of Gene therapy? Playing God etc? Thank you =) xx
Asked by flowergirl - Mon Dec 15 13:44:42 2008 - - 2 Answers - 0 Comments
A. Stem cell research concentrates on the creation of stem cells that can be altered to possibly grow tissues & the like. Gene therapy concentrates on manipulating genes that are already there to find which ones cause certain diseases & conditions and then to hopefully find a way to eradicate them (think cancer, diabetes, etc.). They are not the same thing, but are somewhat related in that both are used to cure and/or prevent certain diseases & conditions - or that is the hope anyways. "Playing God" in relation to the above would be a completely different topic - I wouldn't include that in your speech unless that was the basis of your speech.
Answered by Flusterated - Mon Dec 15 13:59:53 2008
What is the first stage of knocking out a gene in a mouse?
Q. Briefly, what is the first stage of knocking out a gene in a mouse?
Asked by onehotthunnie - Mon Jan 26 01:33:07 2009 - - 2 Answers - 0 Comments
A. You're only asking for the first step, so I'll only briefly explain that. The first step would be taking the embryonic stem cell from a mouse, then introduce it with the desired mutant gene. To distinguish, the mouse has to have a certain feature (usually is homozygous genotype on black color, for example) that you can easily see. Then you inject that cell into the blastocyst embryo of another mouse that has different color (e.g. homozygous genotype for white color) and put it in a "mother" mouse. For further step you can look at the link :D
Answered by lmeong3l - Mon Jan 26 02:33:26 2009
Q. Briefly, what is the first stage of knocking out a gene in a mouse?
Asked by onehotthunnie - Mon Jan 26 01:33:07 2009 - - 2 Answers - 0 Comments
A. You're only asking for the first step, so I'll only briefly explain that. The first step would be taking the embryonic stem cell from a mouse, then introduce it with the desired mutant gene. To distinguish, the mouse has to have a certain feature (usually is homozygous genotype on black color, for example) that you can easily see. Then you inject that cell into the blastocyst embryo of another mouse that has different color (e.g. homozygous genotype for white color) and put it in a "mother" mouse. For further step you can look at the link :D
Answered by lmeong3l - Mon Jan 26 02:33:26 2009
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Los Angeles Times (blog) Gene Kranz was the crew-cut flight director who spearheaded the ground effort in Houston to bring the flight crew safely back home. ...
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Live blog of Auburn head coach . Gene. Chizik at the 2010 SEC Media Days.
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