Multiple Choice
Which type of gene will exhibit its trait even in the presence of a recessive gene?
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3. Extensions to Mendelian Inheritance
Variations of Dominance
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Forms of inheritance that are determined by more than two alleles are referred to as:
A
incomplete dominance
B
codominance
C
multiple allelism
D
epistasis
Verified step by step guidance1
Understand that the question is asking about inheritance patterns involving more than two alleles for a single gene.
Recall that incomplete dominance refers to a situation where the heterozygote shows an intermediate phenotype between the two homozygotes, but it does not involve more than two alleles.
Recognize that codominance occurs when both alleles in a heterozygote are fully expressed, but this also typically involves only two alleles.
Identify that epistasis involves interaction between different genes, where one gene masks the effect of another, rather than multiple alleles of the same gene.
Conclude that the term describing inheritance involving more than two alleles for a single gene is 'multiple allelism', which means a gene has more than two allele forms in the population.
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