If blonde hair is dominant and designated as "b" and brunette hair is recessive and designated as "b," probability would predict that if a couple each with a "bb" hair color genotype had four children, would have blonde hair.

Plummet squares help here: 4 children and dominant so 75% would probably have blonde hair. Sorry if it is wrong there are no answer choices so...

~ Destiny ^_^

answer; the correct answer is (beta)

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.