Question

1. what is the offspring in a cross between homozygous black cow and a homozygous white cow? 2. what is the possible phenotype?​

Answer 1

Answer:

When both recessive and dominant traits are expressed in a heterozygous genotype; it is codominance. This means that none of the factors is recessive but both can express themselves irrespective of their presence in homozygous or heterozygous condition. So, a cross between homozygous red and white horse will obtain progeny with both red and white hairs.

Answer 2

Answer:

1. The F1 offspring in a cross between homozygous black cow (BB) and a homozygous white cow (WW) will be heterozygous (BW) having both black and white color (Co-dominance).

2. The offspring will be a mix of black and white color as both traits are expressed, due to co-dominance.

Explanation:

• Dominance is a relationship between two alleles of the same gene that affects one allele's phenotype and conceals the role of the other allele.
• A recessive trait is one that is suppressed while a dominant trait is one that is exhibited in a phenotypic.
• A kind of dominance known as incomplete dominance occurs when one characteristic only partially outcompetes another, giving rise to an intermediate offspring.
• In terms of genetics, codominance is a sort of inheritance in which two distinct expressions (alleles) of the same gene result in distinct features in a person. That is, both qualities emerge rather than one trait predominating over the other, as in a plant or animal with multiple pigment colors.

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