The Principle of Dominance States That

Question

The principle of dominance states that:
A) In a heterozygote, one allele can never conceal the presence of another allele
B) In a heterozygote, one allele may conceal the presence of another allele.
C) In a homozygote, one allele may never conceal the presence of another allele
D) In a homozygote, one allele may conceal the presence of another allele
E) None of these

Accepted Answer

The principle of dominance states that in a heterozygote, one allele may conceal the presence of another allele. This is known as dominant-recessive inheritance. The dominant allele is expressed, while the recessive allele is not expressed in the phenotype of a heterozygote. In a homozygote, both alleles are the same, so there is no concealing or expression of alleles in that case.