Mendel found that green pea pod color (y) was recessive to yellow pea pod color (Y). For the cross Yy × yy, what percentage of offspring are expected to be yellow?

A female dog with black fur (Ff) mates with a male dog that also has black fur (Ff). Determine the possible genotypes and phenotypes of their puppies using a Punnett Square. Black fur (F) is dominant to grey fur (f).

a)  # of possible Genotypes:

FF: ________ 

Ff: ________ 

ff: _________

b)  % of possible Phenotypes: 

Black fur: __________

Grey fur: ___________