b. insertion
The Klinefelter syndrome is caused by an insertion mutation. It occurs
when there is an existence of an excess or extra X chromosome in each cell that
may cause an abnormality in the development of males. It usually affects the
physical and cognitive development of male with symptoms varying from one
person to another. Kids with these type
of disorder may experience learning
disabilities and even speech and language
problems. These kids tend to be
quiet and very sensitive. They can also be very passive.
