QuestionAugust 1, 2025

In which allelic relationship(s) can heterozygous individuals have the dominant phenotype? total dominance complete dominance incomplete dominance co-dominance none of the choices are correct

In which allelic relationship(s) can heterozygous individuals have the dominant phenotype? total dominance complete dominance incomplete dominance co-dominance none of the choices are correct
In which allelic relationship(s) can heterozygous individuals have the
dominant phenotype?
total dominance
complete dominance
incomplete dominance
co-dominance
none of the choices are correct

Solution
4.3(197 votes)

Answer

Complete dominance (total dominance) Explanation 1. Define allelic relationships Total dominance and complete dominance are synonymous, where the dominant allele completely masks the recessive allele in heterozygous individuals. 2. Analyze incomplete dominance In incomplete dominance, heterozygous individuals show a blend of both alleles, not the dominant phenotype. 3. Analyze co-dominance In co-dominance, both alleles are expressed equally in heterozygous individuals, not just the dominant phenotype. 4. Determine correct relationship Only total dominance (complete dominance) results in heterozygous individuals having the dominant phenotype.

Explanation

1. Define allelic relationships<br /> Total dominance and complete dominance are synonymous, where the dominant allele completely masks the recessive allele in heterozygous individuals.<br /><br />2. Analyze incomplete dominance<br /> In incomplete dominance, heterozygous individuals show a blend of both alleles, not the dominant phenotype.<br /><br />3. Analyze co-dominance<br /> In co-dominance, both alleles are expressed equally in heterozygous individuals, not just the dominant phenotype.<br /><br />4. Determine correct relationship<br /> Only total dominance (complete dominance) results in heterozygous individuals having the dominant phenotype.
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