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In Labrador retrievers, black coat color is dominant to brown. Suppose that a black Lab is mated with a brown one and the offspring are eight black puppies. What is the most likely genotype of the black parent

Answers

Answer 1
Dominant because dominant genotypes overcome recessive genotypes
Answer 2

The genotype of the parents of black puppies are dominant. The two parents can be homozygous (BB) or heterozygous (Bb) dominant.

What is Genotype?

The genotype of an organism refers to the complete set of genetic material in an organism. Genotype can also be used to refer to all the alleles or variants an individual carries in a particular gene or genetic location in the DNA.

In labrador dogs, black coat color is dominant over brown coat color. If black labrador is mated with brown labrador and the offspring produced all eight are black colored that is dominant. Then, in this case the genotype of the parents will be:

If all the offspring are black colored, this means that each puppy has at least one dominant allele 'B' in their genotype. So, it can be predicted that both the parents should be at least heterozygous for this character. If both the parents are heterozygous then, some of the offspring can have brown color coat as well. So, the parents should both be homozygous or one homozygous and one heterozygous for this trait.

This can be shown through punnett square.

Learn more about Genotype here:

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In Labrador Retrievers, Black Coat Color Is Dominant To Brown. Suppose That A Black Lab Is Mated With

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