why do some genes mix while others just get passed down

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When a light skinned person and a dark skinned person have a child, that child is likely to have a mix of those skin tones, resulting in a caramel hue. However, when someone with blond hair and someone with black hair have a child, the child would either have blond or black hair rather than a mix of the two producing brown.

And where do eye colour genes fall in here?

In: Biology

7 Answers

Anonymous 0 Comments

It’s weird, huh? I was always curious how my mother’s red hair mixed with the darker hair of my father (i came out with dark brown hair with red highlights) when jr high genetics taught me that genes are either dominant or recessive.

Turns out, what I was taught is overly simplified at best. There are also states called incomplete dominance and co-dominance that allows for at least partial expressions of more than one gene-variant.

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