rtrapasso
Posts: 22653
Joined: 9/3/2002 Status: offline
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quote:
ORIGINAL: Chickenboy quote:
ORIGINAL: rtrapasso So, are you trying to say that the FEWER genes a species has the more advanced it is? That would put chickens ahead of us... and make Chickenboy possibly the most advanced person here (evolutionarily speaking...) And that would also imply E. coli and the influenza virus have us beat by a large margin (4,169 and 11 genes, respectively). While I concur with rtrapasso's conclusion about my advanced hybrid chicken/human persona (evolutionary speaking of course) , "advanced" is a very subjective term. The number of genes in a given organism is a non-correlate to how advanced an organism is. There's lots of other schemata for determining how 'advanced' an organism is relative to others. Er... i would hope it was pretty obvious (from the examples given) that by most standard the number of genes doesn't have much to do with how "advanced" a species is. As for cats and where they developed: i think it is a logical trap to think that because a species has the most genetic diversity in a particular location that it is then the place where they developed (although of course it MIGHT be true). For instance, lets say cats originated in Libya (in a thought experiment) and that they migrated along the coast of Africa into the Middle East and Turkey. Then the ocean levels change and the Middle East population is cut off from the original Libyan population. The Mid-East population would tend to spread and proliferate genetic diversity as they encounter different climates, but in this though experiment, the Libyan population is wiped out (or at reduced to very small numbers) by a cat virus combined with natural disaster. Actually, this is what has recently happened to the cheetah: it has very narrow genetic diversity. Genetic testing would say "there is more genetic diversity in the Mid-East/Turkey, therefore that is where cats originated", however, in this thought experiment that is not the case. Also, we can say that the ancestral cat that gave rise to most of the current cat species was probably from an arid climate, we don't know where the current species Felis catus developed based on (say) kidney structure. Despite cats living for tens of thousands of years (or more) in relatively wet climates (jungles, etc.), afaik, they haven't tended to lose their relatively efficient kidney function. It would seem to have a survival advantage to be able to drink brackish water if your kidney function is able to hold up until you are able to breed, which seems to be the case with cats. A large percentage of cats i've known tend to go from kidney failure - but only after they've had a successful reproductive life.
< Message edited by rtrapasso -- 3/30/2011 9:17:52 PM >
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