Question 9

(Multiple Choice)

A color- blind woman with Turner syndrome XO has a father who is color blind.Given that the gene for the color- blind condition is recessive and X- linked,provide a likely explanation for the origin of the color- blind and cytogenetic conditions in the woman.


A)nondisjunction in the father at meiosis I
B)no abnormalities had to occur to produce this daughter
C)nondisjunction in the father in meiosis I or II
D)nondisjunction in the other in meiosis I or II
E)nondisjunction in the mother in meiosis I and in the father in meiosis II

Answer