Saturday, June 2, 2012

Geome BOW 8: Immotality

This chapter talks about how this genome seem  to be immortal because the genes we have in our body now are from the unbroken chain of descent links of probably over fifty billion copying over 4 billion years ago.But if the gene is immortal then why does the body die? The body dies because through the four billion years of continuous photocopying did not dull any messages in genes but it is the human skin that slowly loses its elasticity as we age. It also talks about how chromosomes can be copied several hundred times enough to blur the message they contain. So if the fifty billion copying since life you did not inherit the genes you inherit, it is because of chromosome 14 . In the shape of the gene called TEP1, the product of it is a protein which forms most unusual telomerase. So the lack of telomerase causes it put it bluntly, senescence. Also the addition of telomerase will turn certain cells to immortal. Humans are well protected which is why we age slowly and probably more slowly as the era passes. Our infant mortality rate of around fifty percent before age fifty five is high in modern western but is low compared to animals. Natural selection allowed humans to see their children into dependence but no more because at age fifty five and seventy five most people grow grey, stiff, weak, creaky, and deaf.

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