>>Click here
>Posted on 08/31/2005 6:18:11 PM PDT by neverdem
The first detailed genetic comparison between humans and chimpanzees shows that 96 per cent of the DNA sequence is identical in the two species. But there are significant differences, particularly in genes relating to sexual reproduction, brain development, immunity and the sense of smell.
An international scientific consortium publishes the genome of the chimpanzee, the animal most closely related to homo sapiens on Thursday in the journal Nature. It is the fourth mammal to have its full genome sequenced, after the mouse, rat and human being.
Some of the scientific analysis of the 3bn chemical "letters" of the chimp's genetic code focused on its remarkable closeness to the human genome. After 6m years of separate evolution, the differences between chimp and human are just 10 times greater than those between two unrelated people and 10 times less than those between rats and mice.
But most scientists are concentrating on the differences. The vast majority of these probably have little biological significance, said Simon Fisher of the Wellcome Trust Centre for Human Genetics at Oxford: "The big challenge for the future is to pinpoint the tiny subset of differences that account for the origins of unusual human traits, such as complex language."
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| External website: Read Nature's interactive report on the chimp genome >Click here |
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The preliminary evidence suggests that the outstanding size and complexity of the human brain owes less to the evolution of new human genes than to the different way existing genes produce proteins as the human brain grows in the foetus and during infancy. Genes for transcription factors - molecules that regulate the activity of other genes and play a vital role in embryonic development - are evolving more quickly in humans than in chimps.
Three key genes involved in the human inflammatory response to disease are missing in chimps, which may explain some of the differences between the two immune systems. On the other hand humans have lost a gene for an enzyme that may protect other animals against Alzheimer's disease.
The clearest differences to emerge from the analysis are in the Y (male) sex chromosome. While the human Y chromosome has maintained its count of 27 active gene families over 6m years, some have mutated and become inactive on its chimp counterpart.
This finding contradicts the popular view that the human Y chromosome is withering away because it has no genetic "mate" with which to swap genes - a process that repairs damaged DNA on other chromosomes. Presumably an alternative repair mechanism has evolved in humans but not in chimps.
David Page of the Whitehead Institute for Biomedical Research suggested that mating habits in the two species might explain the difference. Because male and female chimps mate with multiple partners there is stronger selective pressure on sperm-producing genes and conversely less pressure on evolution to preserve other genes on the Y chromosome in the apes than in largely monogamous humans.
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Liberals and Leftists have exactly the same DNA as Chimps.....they're Chumps..
Semper Fi
Wow...look how close Teddy's DNA must be!
Hmmm. Is this the reason we turn red when we are embarrased?
4%...what is that.. about 8 million base-pairs?
YEC INTREP - common design = common Designer, not common ancestor
*chuckle* That's the same thing I thought when I read the headline. :)
That's what I thought - lol.
ROFLLLL!!!! *wipes tears*
Chimp and liberal human DNA is 96% identical
The History of Chromosomes May Shape the Future of Diseases
FReepmail me if you want on or off my health and science ping list. Anyone can post any unrelated link as they see fit.
Both of your links grossly misrepresent the actual nature of the DNA evidence, and both sidestep the most significant features of that evidence -- but then, what else would one expect from creationist sources?
Do you have anything that actually deals with the subject head-on, instead of in a misleadingly disingenuous manner?
If this is the best you folks can do, why do you even bother?
...and a country boy can survive.
Best post of the day!
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