Question

which of the following describes the ability of a single gene to have multiple phenotypic effects?
◯ incomplete dominance
◯ pleiotropy
◯ epistasis
◯ multiple alleles

Explanation:

• Multiple alleles: Refers to a gene having more than two alleles in a population, not a single gene having multiple phenotypic effects.
• Epistasis: Occurs when one gene masks or modifies the expression of another gene, not about a single gene's multiple effects.
• Incomplete dominance: Is a situation where the heterozygote has an intermediate phenotype between the two homozygotes, not related to a single gene's multiple phenotypic impacts.
• Pleiotropy: By definition, it is the phenomenon where a single gene has multiple phenotypic effects.

Answer:

pleiotropy