An alien species can either have red eyes or white eyes. The red eye allele is dominant (R), and the white eye allele is recessive (r). The aliens can also be tall or short. The tall allele is dominant (T), and the short allele is recessive (t). The alleles for eye color and height assort independently, and are not sex linked. This particular alien species also produces about 100 offspring per birth.
a. A male alien who is heterozygous for both genes mates with a white eyed, short female. Within these 100 offspring, what is the expected ratio of observed phenotypes? (hint, do a Punnett square)
b. A male alien who is heterozygous for both genes mates with a female alien who is also heterozygous for both genes. Within these 100 offspring, what is the expected ratio of observed phenotypes?