1.

A female with AA+ XXX can only result from female parental non-disjunction.(a) True(b) FalseI have been asked this question in examination.This key question is from Sex Determination in Mammals in section Chromosomes and Sex Determination of Cytogenetics

Answer»

The correct answer is (b) False

Easiest EXPLANATION: Both 1^st and 2^nd MEIOTIC non-disjunction in female can give AA+ XXX combination. Also 2^nd meiotic non-disjunction in male gamete where two X chromosome moves to same pole can also give this result.



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