Yellow hair is dominant to white hair in dogs homozygous dom

Yellow hair is dominant to white hair in dogs. homozygous dominant male mated with a homozygous recessive female. What percentage of their offspring would have yellow hair? Enter you percentage as a decimal value (e.g. 50% would be .5)

Solution

1. Yellow hair (Y) is dominant over white hair (w).

Homozygous dominant male would have genotype: YY

Homozygous recessive female would have genotype: ww

When they mate together, all the offspring will have Yw genotype, wherein Y allele being dominant will give yellow colour. Thus 1.0 (100%) offsprings will have yellow hair.

2. In a enzyme driven reaction, Substrate (reactants) bind to a pocket in the enzyme called the binding site.

3. Yellow hair is dominat over white hair.

When a Yellow hair dog (Yy) mated a white hair dog (WW), they produced 4 offsprings,

YW (yellow), yW (white), YW (Yellow), yW (White).

50% (half) of the four offsprings produced have yellow hair colour.

Thus, to produce half of the offspring with yellow hair colour, the father had heterozygous genotype ie., Yy.