Question

PLEASE HELP!!!

6. In Numbats, yellow bellies (Y) are dominant over green bellies (y).
a) Complete a Punnett square to show a cross between purebred vellow-bellied numbat
and a numbat that is hybrid for belly colour. What is the probability that the parents will
have yellow-bellied offspring?

b) Is it possible for two yellow-bellied numbats to have a green-bellied child? Identify the
genotypes of the parents and complete the cross on the Punnett square.
Genotypes of the parents:
and
If yes, explain how and identify what the probability would be.

Answer 1

The probability of the parents having yellow-bellied off-spring is 100% because all the genotypes have a dominant Y.

It is possible for two yellow-bellied numbats to have a green bellied child if they are both hybrid Yy. The probability of the parents to have a green-bellied child is 25%