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 black?

(It's not 50%, My second guess is 1/4?)

Question

Stanton

Biology

20 November, 22:38

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 black?

(It's not 50%, My second guess is 1/4?)

+3

Answers (1)

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Aditya Wilcox · Answer 1

Since they're heterozygous, the both are Bb. When you cross that, you get one BB, two Bb, and one bb. Since black is dominant, 3 out of 4 of those options result in black hair. Therefore, 75% of offspring will have black hair.

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 black?(It's not 50%, My second guess is 1/4?)

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 black?

(It's not 50%, My second guess is 1/4?)