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If a walnut comb chicken was crossed with a single comb chicken, and in the F1 generation half were walnut and half were pea comb, what was the genotype of the walnut comb parent?

A. WW
B. ww
C. Ww
D. Wp

Answer :

Final answer:

The genotype of the walnut comb chicken parent crossed with a single comb chicken is Ww, indicating it has one dominant allele for the comb shape (either rose or pea) and one recessive allele for the single comb. So, the correct option is c) Ww.

Explanation:

Understanding Chicken Combs Genetics

If a walnut comb chicken is crossed with a single comb chicken and the resulting F1 generation consists of half walnut and half pea combs, the genotype of the walnut comb parent can be deduced based on the inheritance patterns of chicken combs. The question indicates that the walnut comb, which is the result of two dominant genes acting together (R for rose and P for pea comb), crossed with a single comb, presents only one of the dominant genes in the F1 generation (either R or P but not both) since pea combs appear. This suggests that the walnut comb parent had one allele for walnut (either R or P) and one allele for single comb, which is recessive (r or p).

Given this information, the correct answer for the genotype of the walnut comb parent would be Ww, where W represents the dominant gene for either the rose or pea comb, and w represents the recessive gene for the single comb.

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