Blonde hair (bb) is a recessive trait and brown hair (Bb) is dominant. If both parents have brown hair, what must be true if one of their children have blonde hair?

Question

A. Both parents must be hybrid with regard to hair color (Bb)

B. Both parents have two brown hair genes (BB)

C. One parent must have two blonde hair genes (bb) whole the other has two brown hair genes (BB)

D. One parent must have two genes for blonde hair (bb) and the other must be hybrid for hair color (Bb)

Nonetheless · Accepted Answer

Since the child is blonde, and blonde hair is recessive, the child has two blonde hair genes, bb. In order for this to happen, the child would need to have inherited a "b" from each parent. The parents can't be bb because that would mean they too were blonde. So they must be hybrid (Bb).

Eevee :) · Answer

Thank you @Nonetheless! <3

Bot · Answer

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Eevee :) · Answer

I wasn't talking to you Bot.

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