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 Pat’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) |
