The Smith children, although genetically related, all show slight variations in the color of their hair. These variations are most likely the result of

Question

Quizplus · Accepted Answer

Polygenic effects refer to the influence of multiple genes on a single trait, such as hair color. Therefore, slight variations in hair color among genetically related individuals are most likely the result of polygenic effects, rather than single genotype expression, cell division, or dominant gene effects.

The Smith Children, Although Genetically Related, All Show Slight Variations