I just need question 7 answered but the paragraph helps In b

I just need question 7 answered but the paragraph helps!

In birds the male has two identical sex chromosomes designated ZZ, whereas the female has one Z as well as a nearly blank chromosome, designated W (females are ZW). In parakeets two genes control feather color. The presence of the dominant Y allele at the first gene results in the production of a yellow pigment. The dominant B allele at the second gene controls melanin production. When dominant alleles are present for both genes, the feathers are green. If a dominant allele is only present for the Y gene, the feathers are yellow. If a dominant allele is only present for the B gene, the feathers are blue. If dominant alleles are not present at either gene, the feathers have no color (albino). A green male parakeet (P_1) was crossed with an albino female parakeet (P_2) producing all green F_1 progeny. When F_1 males and females were allowed to mate they produced F_2 progeny with phenotypes in the following ratios: What is the genotype of the P_1 green male parakeet? YYBB YyBB YYBb YyBb Which, if any, of the genes controlling feather color in parakeets is Z-linked? Y is Z-linked, B is autosomal B is Z-linked, Y is autosomal Both Y and B are Z-linked Both Y and B are autosomal

Solution

Answer:

6). A). YYBB

Z^YZ^Y;BB (MALE) X Z^yW; bb (FEMALE)

7). A). Y is Z-linked, B is autosomal

	Zy;b	Wb
ZY;B	ZYZy;Bb (Green)	ZYW;Bb (Green)