Question

Farmer Joe has black chickens and purchases a white rooster. Black and white genes in chickens are codominant. Draw Punnett squares to predict the offspring of the black chickens and white rooster.

Use capital "B" for black and capital "W" for white.

1.) What is the genotype of the black chickens?
________________
2.) What is the genotype of the rooster?
_________________
3-4-5.) Genotypic ratio: BB:__ BW:__ WW__

6-7-8.) Phenotypic ratio: Black :___ Black and White:__ White__

9.) If Farmer Joe wanted HALF of the chicken offspring to be black and HALF of the chicken offspring to be Black AND White, what genotype would the rooster have to be that he purchased? ___________

Answer 1

1) Genotype for black chicken is BB

2) Genotype for the rooster is WW

3-5) The ratio is BB:0 BW:100 WW:0

6-8) the phenotype is 0 black, 0 white, 100% black and white

9) The genotype of the rooster would have to be BW

Step-by-step explanation:

Since it is codominant, both colors would show if the alleles were BW.