XYY Syndrome
XYY
Syndrome is a rare genetic disorder which affects males due to an extra Y chromosome.
Healthy males have 46 chromosomes including one X and one Y chromosome. Men
with XYY syndrome have 47 chromosomes, two of which are Y chromosomes. It
is not known why the extra Y chromosome occurs. The disorder is present at
birth and is estimated to occur in one out of every one thousand live births.
In very rare instances, the syndrome has been passed from father to son, but
in most cases heredity cannot be established.
The characteristics of
XYY syndrome are often very subtle and do not indicate and serious chromosomal
disorder. Therefore, males with this condition are frequently undiagnosed
or misdiagnosed. The primary symptoms include tall or very tall height which
becomes evident at the age of five or six, and severe cystic acne during adolescence.
Lower
than average intelligence and/or behavioral problems, such as an......
Join Now or Login to view the rest of this paper.
Approximate Word Count: 470
Approximate Pages: 2 (260 words per double-spaced page) |