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Originally Posted by la6ki
So what? Does the blue eye color have any benefit for the species? Still, it's right there.
Everyone has brown eyes, boy is born with blue eyes, blue eyes are considered beautiful and miraculous, some kind of magic, brown eyed women want to sex boy with blue eyes. Blue eyed boy has 150 sexual partners in lifetime. Brown eyed twin has 7. Also serves for identification, cosmetic difference play a huge role,
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There are still so many recessive genes that haven't died out. And having many children is not necessary for their survival.
Biological evolution has slowed down a tonne (to make way for societal evolution)... And these genes would not have such a strong effect than a gene which directly inhibits procreation. It is very obvious.