"Gain of function" mutations are generally dominant since one copy in a diploid organism is sufficient to alter the normal phenotype.

Name: "Gain of function" mutations are generally dominant since one copy in a diploid organism is sufficient to alter the normal phenotype.
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Gain of function mutations result in a new or increased activity of a protein, which means that even one copy of the mutation can lead to the altered phenotype. Therefore, such mutations are generally dominant.

"Gain of Function" Mutations Are Generally Dominant Since One Copy