Two pure-breeding strains of summer squash producing yellow fruit, Y1 and Y2, are each crossed to a ...

Two pure-breeding strains of summer squash producing yellow fruit, Y1 and Y2, are each crossed to a pure-breeding strain of summer squash producing green fruit, G1, and to one another.

I know the genotype of Y1 is AABB and the genotype of Y2 is aabb. I'm having a problem with these questions (but really, if I get the genotype of G1 I can figure everything else out)

1. What is the genotype of G1?

2. Give the genotypes of F1 from Cross 1

3. Give the genotype(s) of F2 from cross I.

4. Give the genotype(s) of F1 from cross II.

5. Give the genotype(s) of F2 from cross II.

If the F1 of crosses I and II are mated, predict the phenotype ratio of the progeny. (yellow:green)