Question $86$

$1$ pts

A man with normal vision who is a dwarf due to achondroplasia has children with a woman who is colorblind and of average height. Dwarfism caused by achondroplasia is autosomal dominant, and red$-$green color blindness is $x-$linked recessive. What proportion of their sons are expected to be color blind and of normal height?

$\frac{1}{2}$

$0$

$\frac{1}{4}$

$$ all