Eva has blonde hair, but her sister, Cynthia, has brown hair. What is responsible for the sisters' different hair colors?

Name: Eva has blonde hair, but her sister, Cynthia, has brown hair. What is responsible for the sisters' different hair colors?
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Question

Quizplus · Accepted Answer

The sisters inherited different sets of alleles, which are variations of a gene. Hair color is determined by the combination of alleles inherited from both parents, leading to variations such as blonde or brown hair among siblings.

Eva Has Blonde Hair, but Her Sister, Cynthia, Has Brown