Question

Erminette chickens (BW) display codominance. Black is dominance. White is dominant. Erminette chickens are speckled with black and white feathers. What is the phenotypic ratio of the offspring if two erminette chickens are crossed?

Answer 1

1 black 2 erminette 1 white

Step-by-step explanation:

Answer 2

1 BB: 2BW: 1WW

Step-by-step explanation:

The probability of getting a black chicken is 1/4, that of black-white is 1/2 and that of a white chicken is 1/4. In codominance, there is intermediate expression in the phenotype.

B W

B BB BW

W BW WW

The phenotypic ratio is 1 black: 2 black-white: 1 white