Question

In a cross of AaBb ´ AaBb, what fraction of the offspring can be expected to express one of the two dominant alleles, but not both?

Answer 1

Answer:

In a cross of AaBb x AaBb, what fraction of the offspring can be expected to express one of the two dominant alleles, but not both? Genotypes of all offspring: AABB, 2AABb, 2AaBB, 4AaBb, AAbb, aaBB, 2Aabb, 2aaBb, aabb. Fraction of the offspring with one of the two dominant alleles by gene А: 2AaBB, 4AaBb, 2Aabb - 50%.

Explanation:

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