Which of the following is incorrect with respect to Klinefe…

Biology Principles of Inheritance and Variation Skill Builder Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

Which of the following is incorrect with respect to Klinefelter's syndrome?

The fusion of an abnormal egg with a normal sperm.

The fusion of a normal egg with an abnormal sperm.

The fusion of a normal egg with a normal sperm.

An additional copy of X-chromosome.

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The correct answer is:

The fusion of a normal egg with a normal sperm leads to the formation of a healthy baby. Klinefelter's syndrome appears due to the union of an abnormal egg (two X-chromosomes + autosomes) with a normal sperm (Y-chromosome + autosomes) or a normal egg (X-chromosome + autosomes) with an abnormal sperm (XY chromosomes+ autosomes).

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