Dean_the_Young wrote...
The mutations to the DNA that led to any pigment changes, let alone where the pigment changes were, was a random process. There was no deliberate process that brought forth or initiated the development of tiger stripes: it was a random mutation that didn't even look like tiger stripes when it started.balance5050 wrote...
Dean_the_Young wrote...
It ended up as stripes, but it didn't start as stripes. What it would have started as was benign, nearly indistinguishable pigment changes that occured randomly and didn't get wiped out for other reasons.balance5050 wrote...
LOL, evolution is not random it is only the preserverance of succesful genes. Tigers developed stipes over time because it made them better hunters, etc.
Evolution is a long process. A lot of things that evolved to become useful didn't start that way, or anywhere close to it.
Right, the bright yellow cats had a hard time hunting so they died first, over time the cats that had pigment in the right spots had an easier time hunting, got to breed more, and carried the stipe gene until we have what we see today.
I agree, the mutation was random, but the cats that didn't have that mutation had a harder time hunting and died out faster. Hence why the random mutation carried on.
Modifié par balance5050, 21 mai 2012 - 08:05 .





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