In chickens, black and white feathers are codominant. Cross a black-feathered chicken with a checkered (black and white) feather
ed chicken. Identify the possible alleles. Bb BbGg Identify the genotypes of the parents. Create a Punnett square on your own paper for this cross. What is the ratio of the possible phenotypes of the F1 generation
1 answer:
Answer:
The parental cross is BB x BW.
The F1 generation will have the ratio 1 BB : 1 BW
Explanation:
Black (B) and white (W) feathers are codominant. This means that if an individual has both B and W alleles (BW genotye) its feathers will show both colors at the same time (checkered).
A cross occurrs between a black feathered (BB) and a checkered chicken (BW).
The BB chicken can only produce B gametes.
The BW chicken can produce B or W gametes.
The Punnett Square (which I attach) is done by combining the gametes to obtain the possible F1 offspring. It shows that the F1 generation will have the following genotypes and phenotypes:
- 1/2 BB (Black feathers)
- 1/2 BW (Checkered feathers)
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