X linked recessive trait problem?

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 blindness is X-linked recessive. How many of their daughters... show more 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 blindness is X-linked recessive.
How many of their daughters might be expected to be color blind dwarfs?

1. what percentage of their daughters might be expected to be color blind?
2. What percentage of their sons would be color blind and of normal height?
3. They have a daughter who is a dwarf with normal color vision. What is the probability that she is heterozygous for both genes?

i think you use punnet squares...but how do you know what to put for the row/column above and to the side of the punnett square? (did that last question make any sense?)
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