what is XYY syndrome???

Question

yet another research paper -_- this one is for biology

Answer 1

XYY is where there is an extra male chromosome. The condition is usually expressed in extreme "male" behaviour - studies have shown that many violent criminals are XYY, for example. Such males are usually very hairy, tall, very well built and muscular with large hands.

Answer 2

http://ghr.nlm.nih.gov/condition=47xyysyndrome

About 1 in 1,000 males is born with an extra copy of the Y chromosome in each cell. Five to 10 boys with 47,XYY syndrome are born in the United States each day......they are usually taller and more attractive....that's what researcher say anyway.

Answer 3

Klinefelter's syndrome, 47,XXY or XXY syndrome is a condition caused by a chromosome nondisjunction in males; affected individuals have a pair of X sex chromosomes instead of just one and are at additional risk for some medical conditions. It is named after Dr. Harry Klinefelter, a medical researcher at Massachusetts General Hospital, Boston, Massachusetts, who first described this condition in 1942.The condition exists in roughly 1 out of every 500 males.
Signs and symptoms
Affected males are almost always sterile, and some degree of language impairment may be present. In adults, possible characteristics vary widely and include little to no signs of affectedness, a lanky, youthful build and facial appearance, or a rounded body type with some degree of gynecomastia (increased breast tissue). Gynecomastia to some extent is present in about a third of individuals affected, a higher percentage than in the XY population. The far end of the spectrum is also associated with an increased risk of breast cancer, pulmonary disease, varicose veins, diabetes mellitus, rheumatoid arthritis, and osteoporosis, risks shared with women.
Cause
The XXY chromosome arrangement is one of the most common genetic variations from the XY karyotype, occurring in about 1 in 500 live male births.[citation needed] Because of the extra chromosome, individuals with the condition are usually referred to as "XXY Males", or "47,XXY Males" rather than as "suffering from Klinefelter's syndrome."
Treatment
The condition is irreversible, but its symptoms can be altered in a number of ways, including testosterone treatment and other therapies.

While the gender identity of people with XXY karyotype is generally stable, it seems people with Klinefelter's suffer from gender identity disorder more often than people without it. However, this observation is based on the reports of support groups for transgender and transsexual people; no scientific study on this subject has been done. The fact that a person undergoing treatment for gender identity disorder has Klinefelter's syndrome is often missed, or the patient is not told, although in many jurisdictions this additional diagnosis can have legal consequences, for example regarding name change or medical treatment having to be taken.

Inadequately treated hypogonadism in Klinefelter syndrome increases recognized psychosocial morbidity. There is a need for prospectively planned and timed support for young men with Klinefelter syndrome, to ameliorate current poor psychosocial outcomes.

Alternatives to testosterone treatment include a daily regime of cardiovascular exercise along with a complete soy diet or regular vitamins / herbs. Weight bearing exercise creates muscles.

Answer 4

Non-Disjunction In the Fertilizing Male, a "Super-male".

Answer 5

Male with an extra Y chromosome, not many side effects.

Answer 6

An extra man chromosone.....a real man