DrNicmus

a) How is it possible that Andy and April have a child with type B blood type?

b) What is the probability that their next child will be type A?

2. In lab, your studies with Xenopus laevis(South African clawed frog) have observed a new pigmentation phenotype. Two frogs were observed to have blue color on the dorsal side, while most X. laevis strains have a green dorsal color. You place the two blue backed frogs in a new container, and 2 weeks later you get the following offspring:

Based on the offspring numbers above, what was the original genotype of the blue-backed X. laevis placed in the new container and what kind of trait is the blue back? Use Chi Square to support your answer.

3. True breeding Wookies with yellow hair were crossed with true breeding Wookies with yellow hair to produce F1 offspring with dark brown hair. Ten F1s were self crossed and the following F2 offspring were observed:

Dark brown hair 29

Yellow hair 21

Describe the genetic mechanism for these results and support your answer with the Chi Square Goodness of fit test.