228k views
5 votes
A black mouse mates with a brown mouse, why are no brown offspring produced

User Luis
by
8.0k points

2 Answers

4 votes
The black mouse has a dominant gene and the brown mouse has a recessive gene
User Adam Szabo
by
8.2k points
4 votes
Because the black mouse is homozygous.

The black color in mouses is dominant, and the brown is recessive. When a parent is homozygous, their children need to have their gene. Because in this case the trait is black, it dominates brown in all children.

The table is BB×bb = Bb, Bb, Bb, Bb = 100% heterozygous genotype = 100% black phenotype.
User Aprovent
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories