Biology 1st Edition by Jerome Krueger, Kendra Hill, Robert Noyd

تمرين 14

Andalusian chickens show incomplete dominance in feather color. A cross between a black bird and a white bird results in a gray chicken. What ratio of offspring is expected when a black homozygote crosses with a white homozygote?
A) 1 black : 2 gray : 1 white
B) all gray
C) 3 black : 1 white
D) all black
E) 1 black : 1 gray : 1 white