The human disease phenylketonuria has symptoms that include mental problems, chronic skin rashes, and reduced hair and skin pigmentation. Phenylketonuria can be caused by a mutation in a single gene.

Phenlyketonuria is an example of pleiotropy. Based on this, it can be concluded that pleiotropy occurs when

A.

a single gene influences multiple traits.

B.

a trait is influenced by both genes and environment.

C.

a trait is not influenced by genes.

D.

a single trait is influenced by many genes.

Question

Biology

Guest

3 November, 07:30

The human disease phenylketonuria has symptoms that include mental problems, chronic skin rashes, and reduced hair and skin pigmentation. Phenylketonuria can be caused by a mutation in a single gene.

Phenlyketonuria is an example of pleiotropy. Based on this, it can be concluded that pleiotropy occurs when

A.

a single gene influences multiple traits.

B.

a trait is influenced by both genes and environment.

C.

a trait is not influenced by genes.

D.

a single trait is influenced by many genes.

+4

Answers (1)

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Alan Watson · Answer 1

The human disease phenylketonuria has symptoms that include mental problems, chronic skin rashes, and reduced hair and skin pigmentation. Phenylketonuria can be caused by a mutation in a single gene.

Phenlyketonuria is an example of pleiotropy. Based on this, it can be concluded that pleiotropy occurs when a single gene influences multiple traits.