If a heterozygous (for both alleles) black dog is bred to a yellow lab whose parents...
If a heterozygous (for both alleles) black dog is bred to a yellow lab whose parents were both chocolate colored, what would the phenotypic ratios be? (Remember 4 X 4 Punnett Square).
Homework Answers
According to Punnet square the Phenotypic ratios would be 3;1. If a heterozygous black dog with different alleles is bred to a yellow labrador whose parents were chocolate colored, the probability of the dog being black to yellow is in the probability of 3:1.
| Bb | Yy |
| BY | by |
| By | bY |
This works in accordance with Mendelian law of segregation, where the genes are equally distributed among the gametes. This law states that the phenotypic ratio will be in the range of 3:1 as the dominant factor is more predominant than recessive.
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