Dust and Ashes
wretched, miserable, poor, blind and naked
I absolutely agree. What I was saying is that if the environment is more hostile to people with certain genetic characteristics, those people will tend to live shorter lives and reproduce less. Such as say giraffes with shorter necks not being able to reach leaves and starving. The longer necked giraffes would produce more offspring since they would have an advantage by being able to reach food inaccessible to the shorties. It has nothing to do with stretching their necks or the people getting tanned and passing along the tanned skin.adam149 said:For example, if a giraffe strained its neck to get at the leaves at the top of trees and it's neck got a little longer as a result of the stretching, when that giraffe had offspring, they would start with that slightly longer neck. They would stretch too, and their necks would get longer. And they would have offspring which would stretch, etc, etc., and eventually, the giraffe's neck would be at the length it is today. Even Charles Darwin bought into this theory of evolution.
But it poses some problems, because the theory predicts that if a parent were to have their arm chopped off, any children would not have that arm the parent lost. Mendel, the father of modern genetics disproved this theory when he lopped the tails off of 19 generations of mice, but the new born mice always had tails.
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