An abnormal human baby with 'XXX' sex chromosomes was born due to:
1. formation of abnormal ova in the mother
2. fusion of two ova and one sperm
3. fusion of two sperms and one ovum
4. formation of abnormal sperms in the father

A human female with Turner's syndrome:

1. has 45 chromosomes with XO

2. has one additional chromosome.

3. exhibit male character

4. is able to produce children with a normal husband.