Dominance and recessiveness are all-or-nothing situations because the recessive allele has no phenotypic effects in heterozygotes.

Name: Dominance and recessiveness are all-or-nothing situations because the recessive allele has no phenotypic effects in heterozygotes.
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Dominance and recessiveness are not always all-or-nothing situations because in some cases, both alleles can influence the phenotype in heterozygotes, leading to incomplete dominance or codominance.

Dominance and Recessiveness Are All-Or-Nothing Situations Because the Recessive Allele