In a certain breed of dogs, black hair is dominant and brown hair is recessive. If two parents are heterozygous for black hair, what is the probability that their offspring will be brown?

Respuesta :

LaseaT

25%

This is due to the box.

       A        a

A     AA     Aa

a      Aa      aa

So, if you see the capital A thats the black hair type , and the lower case a is brown. The two Aa's will be black but have brown as their recessive trait :) Hope this helps