MHT CET Biology question

Biology Principles of Inheritance and Variation MHT CET

An abnormal human baby with 'XXX' sex chromosomes was born due to

(A)Formation of abnormal sperms in the father
(B)Formation of abnormal ova in the motherCorrect
(C)Fusion of two ova and one sperm
(D)Fusion of two sperms and one ovum

Answer: (B)

Solution

Non-disjunction of X chromosomes during oogenesis gives an XX ovum which is fertilised by an X-bearing sperm to form XXX; (c) and (d) describe

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Question ID VK-059471