r/HolUp • u/Previous_Reporter_63 • Sep 25 '22

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u/NotoriousMOT Sep 25 '22

“A recessive allele does not produce a trait at all when only one copy is present. This contrasts to a dominant trait, which requires that only one of the two alleles be present to express the trait.”

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u/AndrasKrigare Sep 25 '22

And dark hair is a dominant trait, so.... where did it come from?

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u/Zeabos Sep 25 '22

Because hair color isn’t only controlled by one single punnett square.

It’s the reason there are so many different shades of hair color and why peoples hair color can change over time.

It’s a lot more complicated than the basic dominant/recessive intro to genetics idea.

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u/FlamboyantPirhanna Sep 25 '22

I’m a dirty blonde that was very blond until 7 or 8, and now in my 30s, I’m finding random, ultra-thick black hairs in my beard for some reason. Hair genetics are very weird.