Incorrect statements are

Biology Principles of Inheritance and Variation Skill Builder Single Correct MCQ

Published on: August 21, 2026

Sickle-cell anemia is an autosome linked dominant trait.
and and

Phenylketonuria, inborn error of metabolism, inherited as autosomal recessive trait.
, and

The failure of cytokinesis leads to an increase in a whole set of chromosomes in an organism and, this phenomenon is known as polyploidy.
and

Down's syndrome is due to the presence of an additional copy of X-chromosome.

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The correct answer is:

Sickle-cell anemia is an autosome linked recessive trait. Klinefelter's syndrome is caused due to the presence of an additional copy of X-chromosome.

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