Quote:
Originally posted by CET
Those that just happened to have longer necks were able to eat more then those with shorter necks. Thus those with shorter necks died and those with longer necks had more children. The children with the longest necks could reach the most food, thus giving thier children the trait of having longer necks. Etc.
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Mike,
This is exactly like the cold-survival you brought up earlier combined with the gene passing probability that I discussed.