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Genetic Disorders

The gene diso...

Question

The gene disorder phenylketonuria is an example for

A

Polygenic inheritance.

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B

Peliotrophy.

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C

Mutliple allelism.

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D

Multiple factor.

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Solution

The correct option is C Peliotrophy.
Pleiotropy is a condition when one gene controls two or more unrelated traits. Phenylketonuria (PKU) is an inborn error of metabolism that results in decreased metabolism of the amino acid phenylalanine. So, the gene disorder phenylketonuria is an example of pleiotropy.
Thus, the correct answer is option B.

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Similar questions

Q. (a) Explain polygenic inheritance and multiple allelism with the help of suitable examples.

(b) "Phenylketonuria is a good example that explains Pleiotropy." Justify. [5]

Q. Bring out the differences between pleiotropy and multiple allelism, with an example for each.

Q. Inheritance of blood group is
(a) Codominance
(b) Incomplete dominance
(c) Multiple allelism
(d) Multiple gene

Q. (I) Pleiotropic genes have multiple phenotypic effects
(II) Multiple alleles exhibit the same phenotypic expression
(III) Cystic fibrosis and phenylketonuria are examples of pleiotropism

Inheritance of blood group is a condition of: -

(A) Co-dominance

(B) Incomplete dominance

(C) Multiple allelism

(D) Multiple gene

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