07-02-2007, 04:04 AM
kaworu_nagisa Wrote:When ever I think about life, I look at us like, them little bacteria, or small life forms swimming in liquid, multiplying, evolving and adapting. haha...Modern humans havent been around long enough to determine whether or not macro evolution in our species will take place.
From what I can sum up, We human beings, Stopped evolving and adapting to our own climates, etc. why? Howcome?, We using technology to aid our daily lifes, we build shelter to keep warm, protected from harm (our bodies won't need to evolve to keep warm or cold, grow scales, armour plating for protection etc.
cool no?
Anyways, Living on mars... as scientist said, send nukes up to it to speed up its global thingy...
Micro evolution in humans in action:
A surprisingly recent instance of human evolution has been detected among the peoples of East Africa. It is the ability to digest milk in adulthood, conferred by genetic changes that occurred as recently as 3,000 years ago, a team of geneticists has found.
Convergent Adaptation of Human Lactase Persistence in Africa and Europe (Nature Genetics)
The finding is a striking example of a cultural practice â the raising of dairy cattle â feeding back into the human genome. It also seems to be one of the first instances of convergent human evolution to be documented at the genetic level. Convergent evolution refers to two or more populations acquiring the same trait independently.
Throughout most of human history, the ability to digest lactose, the principal sugar of milk, has been switched off after weaning because there is no further need for the lactase enzyme that breaks the sugar apart. But when cattle were first domesticated 9,000 years ago and people later started to consume their milk as well as their meat, natural selection would have favored anyone with a mutation that kept the lactase gene switched on.
Continued


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