Blue eye color is recessive to brown eye colo | vedclass

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(A) Let the allele for brown eyes be $B$ (dominant) and the allele for blue eyes be $b$ (recessive).Since the man has brown eyes but his mother was bl

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Both blue-eyed and brown-eyed in $1:1$ ratio

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(A) Let the allele for brown eyes be $B$ (dominant) and the allele for blue eyes be $b$ (recessive).Since the man has brown eyes but his mother was blue-eyed $(bb)$,he must have inherited one $b$ allele from her. Thus,his genotype is $Bb$.The woman is blue-eyed,so her genotype must be $bb$.When we cross the man $(Bb)$ with the woman $(bb)$:$Bb 	imes bb ightarrow Bb, Bb, bb, bb$.This results in $50\%$ brown-eyed $(Bb)$ and $50\%$ blue-eyed $(bb)$ children,which is a ratio of $1:1$.

Blue eye color is recessive to brown eye color. $A$ brown-eyed man whose mother was blue-eyed marries a blue-eyed woman. What will be the phenotypes of their children?

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