All chicken have combs on their heads, but it does not always look the same. The comb is a fleshy growth on the top of the chicken's head. Both male and female chickens have combs, but the ones on the male are larger. Combs of different breeds may look different in shape and even in color.
For each cross, indicate the expected phenotypes.
1. Walnut combs (both heterozygotes) RrPp x RrPp
Single _____
Rose ____
Pea ____
Walnut ____
2. Single comb x Walnut (RrPp)
Single _____
Rose ____
Pea ____
Walnut ____
3. Single comb x Pea comb (rrPp)
Single _____
Rose ____
Pea ____
Walnut ____
4. Single comb x Pea comb (rrPp)
Single _____
Rose ____
Pea ____
Walnut ____
5. Rose comb (RrPp) and Pea Comb (rrPP)
Single _____
Rose ____
Pea ____
Walnut ____