2. A man really wants to have a baby with type AB blood so he can brag to his friends that his kid is rare. Is it possible for a baby to get type AB blood if the mom has type O blood? Prove your answer showing all work. Sex-Linked Practice ......................................................................dominant over white eyes (r) Show the cross of a white eyed female X^rX^r with a red-eye male X^RY a. How many are white eyed, male __ b. How many are white eyed, female __ c. How many are red eyed, male __ d. How many are red eyed, female __ 2. Show the cross of a red eyed female (heterozygous) and a red eyed male. a. What are the genotypes of the parents? __ __ b. How many are white eyed, male __ c. How many are white eyed, female __ d. How many are red eyed, male __ e. How many are red eyed, female __

1. For the first question, a man with type AB blood can only pass on either an A or a B allele to his offspring. A woman with type O blood can only pass on an O allele. Therefore, it is not possible for a baby to have type AB blood if the mother has type O blood.2. For the sex-linked practice: a. When crossing a white-eyed female with a red-eyed male , the possible combinations are and . This means that all females will have red eyes, and all males will have white eyes. b. There are no white-eyed females in this cross. c. All males will have red eyes. d. All females will have red eyes.3. For the second cross: a. The genotypes of the parents are and . b. There are no white-eyed males in this cross. c. There are no white-eyed females in this cross. d. All males will have red eyes. e. All females will have red eyes.