A female achondroplastic dwarf with normal vision marries a

A female achondroplastic dwarf with normal vision marries a color-blind man of normal height. The woman\'s father was six feet tall and color-blind, and both the man\'s parents were of average height. Achondroplastic dwarfism is autosomal dominant, and red-green color blindness is X-linked recessive. How many of their male children might be expected to be color-blind and achondroplastic dwarf?

Solution

As Red green color blindness is X linked recessive trait, but only Y chromosome is inherited from father so no color blindness.

As X is inherited from mother which has a dominant allele to it, the male progeny may be affected totally by Dwarfism.