Gene Definition and 137 Threads

Hey guys, I've got a developmental question for yall. How would you experimentally compare gene expression during gastrulation in birds with that in frogs? I've been racking my brain trying to think of this, and the only way I can think of is to use a microarray, since it allows you to look at...

Here a newsstory about horizontal gene transfer: Compare with neodarwinism: Since gene swapping by organisms causes genetic variation, does this contradict neodarwinism which claims genetic variation is caused by random mutations?

The way I understand it, genes are rather sparse within a strand of DNA. The human genome, for example, has a few thousand genes in a strand of 3.5 million A,C,G,T bases. I also understand that genes code for proteins through RNA but, again, most of the DNA is noncoding. My question is, how...

Fascinating new study of the 270 individuals on whom the international HapMap is based: http://www.nature.com/nature/journal/v444/n7118/abs/nature05329.html (From Nature, Via Gene Expression) Also see this newspaper story about the duplicated gene implications...

Question on Gene expression!? Explain how selective gene expression yields a variety of cell types in multicellular eukaryotes. Explain how eukaryotic gene expression is controlled, and compare it to gene control in prokaryotes. can anibody tell me the answers??! thanks :shy:

Pretty basic math question, but I really haven't taken Statistics since the AP in HS. The basics are... There are several thousand things (genes) that are measured and have a numeric value. Each of these numeric values has an associated error with it. There are six trials for EACH of those...

Hey, so in 2003, it was announced that the human genome was more or less mapped. The difference between individual humans is about 0.2 percent of the 3 000 000 000 genes we have. So somehow, this percentage should account for all of the human variations that aren't dependent on environment...

In a male, gender gene is expressed as XY, so people know how a male to be male by its Y, but in a female, the gene is XX, and I am wondering which one of XX is characterized for female... If the left one is, then what is the functionality of the right one ?

I have just finished this amazing book by Dawkins and I was wondering if there were any others of similar caliber exploring the view of the selfish gene. Also how good are the Extended Phenotype and Blind Watchman by the same author?

http://biosingularity.wordpress.com/2005/12/25/scientistists-discover-a-gene-that-regulates-lifespan/ Scientist have discover a gene that regulates ageing and lifespan

http://www.nytimes.com/2005/12/16/science/16gene.html Yesterday's issue of Science magazine, and this article in the 16 December NY Times report that a major determinant of skin color is a single gene which has been located reportedly 99 pecent of European caucasians have one allele, one...

Do you think if the meiotic cell code is taken instead of mitotic or somatic cells: for example two eggs code...and then remixed...then the sexual function is taken into account into that cloning process...but then how to recompose the genes...this could explain why a mix_clone of a man could...

Rattlesnakes have infrared cavity sensors, and I was wondering if it was possible to, ahem, take their Pax6? Pax7? genes and clone them into human embryos, creating a super baby human that can see IR waves

I realize this is somewhat of a touchy subject to joke about but really I'm not joking. I've been wondering lately why there are any suicidal people around at all... it just doesn't make any sense. Wouldn't all the suicidal people have taken themselves out of the gene pool long ago, leaving...

Hey I was looking at Jurassic Park and they talk about Hoods (automated gene sequencers) and they say they're machines that work out the genetic code by themselves. I don't know if those exist or not but Hypothetically could somebody pay someone to give them their genetic code on paper? (or...

Can you tell me what exactly is gene expression ? I think it is the expression of a gene, correct ? By the way, I see my teacher usually sits in front of his computer, with a long page full of amino acids, I guess he might take it from somewhere's database, but do you know why people usually...

Tell me please what is/are the difference/s between "genetic codes", "DNA", and "genes" ? :confused: Thank you

In the future ...would the impact of gene manipulation be positive or negative? If there are limits to the way the technology is used, it would be positive right? We could cure a lot of diseases...

Well, this Thursday, on my birthday, "Dr. Gene Ray, Wisest Human" will give a lecture on his Time Cube theory. If you have not heard of it, look here: http://www.timecube.com/ . If anyone can decipher what he is talking about, please share your thoughts with the rest of us and explain it...

Gene Therapy Can you use gene therapy to change eye color (or something other than that to permanently change eye color) or is gene therapy not available for that yet?

I am curious to know how cells in developing organisms can know which direction to grow in, how much tissue is required and in what proportion, and how to differentiate to the right cells. If we just take the first issue, which is directional growth, I remember from my O-level biology classes...

I'm very interested in learning about gene manipulation projects and the morality of this delicate issue. I was reading up on how it is theorized one day we could live to be 1000 and how it wasnt a very farfetched concept If you have any links or your own input on the subject I would greatly...

Can somebody give me good reference and links for gene interaction.I am in dire need of it. Regards drdolittle

This is a classic of popular writings on evolutionary biology (from 1976), so I assume many PF members are familiar with this book. I just got around to reading it now and I was impressed by it. I certainly liked it better than the other, more recent book of his I read, “Climbing Mount...

Reference: http://www.harktheherald.com/modules.php?op=modload&name=News&file=article&sid=37943&mode=thread&order=0&thold=0

I was trying to find something about regulation mechanisms for expression of HSP genes, but no luck. Thing is I was thing about, maybe, possibility of thermo unstable repressor mechanism, but I don’t know how much that is possible. Any comments or information would be great.

What are the possibilities that all Terran life originated from a singular strand of mono-DNA or singular mono-protein? :rolleyes:

"The researchers' new discovery involves a gene called MYH16, which had apparently gone unrecognized because of a small mutation that had rendered it inactive for producing some jaw muscles for chewing and biting. The scientists found that this myosin gene was still intact today in other...

http://www.biomedcentral.com/news/20040303/01

Im taking a class on Minority history, and the subject at hand was how historically Whites had/have [iraq was brought up as a modern day white conquest] a tendency to opress other races, while other races usually would'nt opress but would rather mix than fight. The discussion was mostly about...

Cancer Gene Therapy World's First to Market Gabe Romain Betterhumans Staff Thursday, November 20, 2003, 4:27:07 PM CT Thursday, November 20, 2003, 4:27:07 PM CT The world's first commercially available gene therapy medication will soon be treating head and neck cancer in China...

Hey In what respects is the process of gene transcription similar to the process of DNA replication? Thanks Lindsay

The Earths population is a vast pool of differing Genes if we take peoples from all societies. I have noticed from old Photographs that Humans, their facial features, seem to be becoming more and more similar? Taking all the photos I have seen, for instance if I look at an old photo of say south...

I will be attempting to ligate a gene fragment (~650bp's) into a Pbluescript plasmid here in the next day or so. The fragment and the vector have both already been digested and purified, so that's not an issue. However, I have been advised by a number of differnt people that the concentrations...

http://www.newscientist.com/news/news.jsp?id=ns99994226 A gene variant that may make people particularly susceptible to the deadly SARS virus, has been identified by scientists in Taiwan. The gene variant is prevalent in people of south Chinese origin, so the discovery may help explain...

I saw on the discovery channel that genetisists have injected a mouse with a virus that had a chunk of DNA on it. The DNA was for muscle growth and this mouse was huge and stayed that way. What the heck. That freaked me out. How does this trojen horse style gene injecting thing work? Even if one...

Sars gene code confirmed and will be published soon in Science http://news.bbc.co.uk/1/hi/health/2992693.stm Here is the un-reviewed sequence of the SARS genome (27,000 base pairs) http://www.rense.com/general37/blasst.htm