Question 2

(Multiple Choice)

Red-green color blindness in humans is an X-linked recessive trait.What will the progeny ratios be if a carrier female is mated with a normal male?


A)All the sons will be color blind; all the daughters will be normal.
B)All the sons and half the daughters will be color blind.
C)Half the sons will be color blind; all the daughters will be carriers.
D)Half the sons will be color blind; half the daughters will be carriers.
E)All the sons and all the daughters will be normal.

Answer

D