A man who is an achondroplastic dwarf with normal vision marries a color-blind woman of normal height. The man's father was of normal height, and both the woman's parents were also of average height. Achondroplastic dwarfism is autosomal dominant, and red-green color blindness is an X-linked recessive trait. They have a daughter who is a dwarf with normal color vision.

1. What is the probability that she is heterozygous for both genes?

2. How many of their daughters might be expected to be colour-blind dwarfs?

3. What proportion of their sons would be colour blind and normal height?

4. Use punnet square to indicate the genotype and phenotype of each possible offspring.

5. Indicate the genotypes of the parents (achondroplastic dwarf and colour-blind woman).