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An abnormal human baby with 'XXX' sex chromosomes was born due to:
  • a)
    fusion of two sperms and one ovum
  • b)
    formation of abnormal sperms in the father
  • c)
    formation of abnormal ova in the mother
  • d)
    fusion of two ova and one sperm
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
An abnormal human baby with 'XXX' sex chromosomes was born due...
formation of abnormal ova in the mother
Formation of an abnormal ova usually occurs as an event during the formation of reproductive cells. 
An error in cell division called non-disjunction can result in reproductive cells with additional chromosomes. Any of these cells if contributes in the genetic make up of child leads to trisomy of X-chromosome i.e. the child will have an extra X-chromosome. ZZ+ XX in mother will lead to birth of XXX genotype baby.
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Community Answer
An abnormal human baby with 'XXX' sex chromosomes was born due...
Formation of abnormal ova in the mother during division of oocyte.
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An abnormal human baby with 'XXX' sex chromosomes was born due to:a)fusion of two sperms and one ovumb)formation of abnormal sperms in the fatherc)formation of abnormal ova in the motherd)fusion of two ova and one spermCorrect answer is option 'C'. Can you explain this answer?
Question Description
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