An achondroplastic male dwarf with normal vision marries a color-blind woman of normal height. The man’s father was six-feet tall, and both the woman’s parents were of average height. Achondroplastic dwarfism is autosomal dominant, and red-green color blindness is X-linked recessive.

How many of their daughters might be expected to be color-blind dwarfs?
a. all
b. none
c. half
d. one out of four
e. three out of four