Question

1.) Use a Punnett square to help answer the question.

In rabbits, black fur is dominant over gray fur. What percentage of offspring will be gray if a heterozygous male and homozygous dominant female have offspring?

punnett
Question 1 options:


100%


0%


25%


50%

Answer 1

the correct answer is 0 ℅ !!

as heterozygous dominant and homozygous dominant crossed then one is heterozygous and one child I homozygous dominant !

so no child have gray fur !!

if you need more explanation, comment !!

Answer 2

Let B = black and b = gray. Male is heterozygous, so he is Bb. Female is homozygous dominant, so she is BB.

B B
B| BB BB

b| Bb Bb

Since a dominant trait is in all of them, the answer is 0%. It will only be grey if it is bb.