If a person has one gene for blue eyes but actually has brown eyes, blue eyes must be a __________ trait.
A) dominant
B) recessive
C) sex-linked
D) polygenic

Question

Quizplus · Accepted Answer

Brown eyes are the dominant trait, meaning that if a person has one gene for brown eyes, that gene will be expressed and the person will have brown eyes. Blue eyes are recessive, meaning that both genes must be for blue eyes in order for the trait to be expressed. In this case, the person has one gene for blue eyes, but the dominant brown eye gene is expressed, resulting in brown eyes.

If a Person Has One Gene for Blue Eyes but Actually