If blue eyes are a recessive gene and green eyes are a dominant gene, why are there more people with blue eyes?
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Dominance is different from prevalence. Dominance means “if you already have this gene, then you have this characteristic”. But some genes are very rare, so it’s not often you get them. For example, having six fingers is dominant (polydactyly), but it’s a very rare gene. This is why you don’t often see people with six fingers in one hand, but when you do, their family members probably also have six fingers.
(Polydactyly is a common example of dominant trait. However, most human characteristics are not simple Mendelian traits. iirc the few Mendelian characteristics humans have are diseases, and the only non-disease is about ear wax)
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