What prevents the expression of a recessive allele

Question

Selina

Chemistry

1 February, 05:58

What prevents the expression of a recessive allele

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Answers (2)

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Fellow · Answer 1

Dominant alleles prevent the expression of a recessive allele, unless it is a genotype of two recessive alleles.

Caroline Wilson · Answer 2

Usually the presence of a dominant version of allele masks the expression of a recessive allele. A recessive allele is only phenotype is only expressed when 2 recessive alleles combine.