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Which of the following is incorrect with respect to Klinefelter’s syndrome?(a) The fusion of an abnormal egg with normal sperm(b) The fusion of a normal egg with an abnormal sperm(c) The fusion of a normal egg with a normal sperm(d) An additional copy of X-chromosomeThis question was posed to me by my college professor while I was bunking the class.My enquiry is from Inheritance and Variation Principles in chapter Principles of Inheritance and Variation of Biology – Class 12

Answer»

Correct ANSWER is (c) The fusion of a normal egg with a normal sperm

The explanation: 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 abnormal sperm (XY chromosomes+ autosomes).



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