A phenotype that results from a dominant allele must have at least ___ dominant allele (s) present in the parent (s).

Question

Damian Arroyo

Biology

23 April, 20:57

A phenotype that results from a dominant allele must have at least ___ dominant allele (s) present in the parent (s).

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Answers (1)

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Skylar Blanchard · Answer 1

One dominant allele

Explanation:

Two alleles are needed in any one locus, and they can either be dominant or recessive. Since a dominant allele will hide the expression of the recessive allele, only one dominant allele is needed in the parents. In other words, one parent must contribute a dominant allele and the other parent can contribute either a dominant or a recessive allele. The resulting phenotype will have the dominant phenotype in all cases.