Evolution

Re: Another talking point
Re: Another talking point -- Remi Post Reply Top of the thread Forum
Posted by: cyanidefreak
05/12/2008, 17:51:05
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 I'd like to know which yeast gene is identical to a human gene. There are many similar, but not one single gene is identical. Not one. There are genes that are similar between the phyla and perform the same functions. Human versions of some genes inserted into a yeast genomes work perfectly well. But there is not one single gene in yeasts that is identical to humans.

What does this mean? It means that there's a limit to the amount of substitutions that can be made to a gene sequence before the gene changes functionality. Genes coding for cytochrome are similar across the phyla because if they were radically different, they wouldn't be coding for cytochrome any more, they'd be coding for proteases or lypases or something else ... or nothing at all.

The existence of genes which are shared by widely different organisms conclusively demonstrates that only certain things work in living organisms - it proves nothing about the kinship of all living things on this planet.


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Evolution