What is the primary effect of recessive mutations on gene function?
Understand the Problem
The question is asking about the main impact of recessive mutations on the function of genes, specifically focusing on how such mutations affect enzyme activity.
Answer
Loss of function (often requires both alleles mutated).
The primary effect of recessive mutations on gene function is typically a loss of function, where both alleles of a gene must be mutated to significantly impact the organism.
Answer for screen readers
The primary effect of recessive mutations on gene function is typically a loss of function, where both alleles of a gene must be mutated to significantly impact the organism.
More Information
Recessive mutations generally lead to a loss of function, meaning that the gene's product is either not made, or made in such a way that it has reduced activity. This effect is not typically noticeable unless both alleles are mutated, defining their recessive nature.
Tips
One common mistake is confusing a recessive mutation with dominant mutations, which can affect the organism even if only one allele is changed.
Sources
- Recessive Traits and Alleles - genome.gov
- Loss-of-Function Mutation - an overview | ScienceDirect Topics - sciencedirect.com
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