Formation of abnormal ova i.e., 22 + XX in the mother will lead to birth of baby with 'XXX' genotype, due to chromosomal non disjunction in ova. Nondisjunction is the failure of the chromosomes to disjoin and move to opposite poles.
An abnormal human baby with 'XXX' sex chromosomes was born due to:
Held on 30 Apr 2015 · Verified 9 Jul 2026.
Formation of abnormal sperms in the father
Formation of abnormal ova in the mother
Fusion of two ova and one sperm
Fusion of two sperms and ovum
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