A mutation in a gene often results in a reduction of the product of that gene.The term for this type of mutation is ________.
A) codominance
B) incomplete dominance
C) gain of function
D) multiple allelism
E) loss of function or null (in the case of complete loss)

Question

Quizplus · Accepted Answer

A mutation that results in a reduction or complete loss of function of a gene is called a loss-of-function or null mutation. This is in contrast to gain-of-function mutations, which result in an increased or new activity of the gene product. Codominance and incomplete dominance refer to patterns of expression for alleles of a single gene, whereas multiple allelism describes the presence of multiple forms of a gene within a population.

A Mutation in a Gene Often Results in a Reduction