Question

Outline a project which aims to find the dominant coat color in dogs.

Answer 1

Coat color in dogs:

1. In both homozygous and heterozygous conditions the dominant gene is expressed.
2. So far 11 genes have been identified that determine the coat color of dogs.
3. A cross can be performed to determine the dominant gene.

Cross:

1. Consider two parents - one homozygous black (BB) and the other homozygous brown (bb).
2. When crossed they produce offspring with genotype Bb.
3. The dominant trait can be determined by looking at the offspring.
4. If the offspring is brown in color then brown is the dominant trait and if it is black, then black is the dominant trait.