Chris (Blood Type A; Widows Peak (an autosomal dominant trait), normal skin pigment) and his wife...

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Biology

Chris (Blood Type A; Widows Peak (an autosomal dominant trait),normal skin pigment) and his wife Pat (Blood Type B; No WidowsPeak; Albino (an autosomal recessive trait) have four children.Chris has a sister with cystic fibrosis (an autosomal recessivetrait), but Chris appears normal. Chris is colorblind (an X-linkedrecessive trait), but Pat is not.
Which of the following might NOT be the child of Chris andPat?
Blood Type A; Widows Peak; Normal Skin Pigment
Blood Type B; No Widows Peak; Albino
Blood Type AB; Widows Peak; Normal Skin Pigment
Blood Type O; No Widows Peak; Albino
Any of them could be their child.
If Chris isheterozygous for skin pigment; what expected percent of potentialoffspring with Pat would be albino?
0?
25%
50%
75%
100%
If Chris and Patâ€™sfirst child is a daughter that is colorblind. They have anotherdaughter, what are the chances that she is color-blind? (Draw aPunnett square if needed)
0
1/16
1/4
1/2
1

Answer & Explanation Solved by verified expert

4.3 Ratings (895 Votes)

1 ABO locus determines blood IA IB and I are three allelesthat determine the blood groupIAIAIAI Atype blood IAIB AB type blood IBIB IBI B typeblood II O type bloodlet the alleles be W Widows peak w straight hairlineA normal skin pigment a albinismChris Blood Type A Widows Peak an autosomal dominant traitnormal See Answer

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