homozygous line of normal-hearing dogs was crossed with a homozygous line of deaf dogs. F1 and F2 generations were produced. What percent of F1 generation is expected to have normal hearing?

Question

homozygous line of normal-hearing dogs was crossed with a homozygous line of deaf dogs.  F1 and F2 generations were produced.  What percent of F1 generation is expected to have normal hearing?  
What is a phenoeyeic ratio of the F2 generation?

Devron · Answer

I answered this question, and the second is incomplete. There are three types of progeny in the F1 generation, and the question doesn't specify which progeny.