Several studies have revealed that the Eda gene fulfills the three necessary conditions for evolution by selection. Which is not one of these conditions?

A) functional importance of armor for survival
B) extensive among-individual difference in phenotype
C) inherited genetic variation underlying phenotype differences
D) genetic fixation at the Eda gene

Eda Gene

A gene associated with the development of ectodermal tissues, including skin, hair, teeth, and glands, and can influence phenotypic variations.

Functional Importance

The significance of a structure, process, or gene in the survival, fitness, or performance of an organism.

Inherited Variation

Genetic differences passed on from parents to offspring, contributing to diversity within a species.