Question

Part Alonis bom with bus syndrome and hemoph H ather was and his mother hersive X-radiood doing disorder What occurred in to produce the outcome Onondicionin me of the mother nod ion in eis of the mother nondisjunction in meisil of the father nondonion in the moo is il of the mother non siunction in of the father Submit A

Answer 1

Nondisjunction in meiosis II of the mother and nondisjunction in meiosis I of the father can lead to this genetic outcome.

As we know that kleinfelter's syndrome is the situation in which trisomy of sex chromosomes occur. XXY is the situation of sex chromosomes in the person.Obviously two X chromosomes represent the mistake in separation of X chromosomes.Male only transfer Y chromosome to his son but at the meiosis I stage if the separation of his XY chromosomes does not take place then it leads to XY chromosome sperm and forms XXY situation.The separation of the pair of X chromosomes in female at the meiosis II stage leads to the dual copy of X chromosomes in gametes.  

So there is multiple answers.