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Kline·fel·ter's syn·drome
an abnormal condition in which at least one extra X chromosome is present in a male: characterized by reduced or absent sperm production, small testicles, and in some cases enlarged breasts.
Source: Dictionary.com

Klinefelter syndrome


Klinefelter syndrome or Klinefelter's syndrome (KS) also known as 47,XXY or XXY, is the set of symptoms that result from two or more X chromosomes in males .

Klinefelter Syndrome Support Group website


Educational and support information about Klinefelter Syndrome/XXY and its variants.

Klinefelter syndrome - Genetics Home Reference


Klinefelter syndrome is a chromosomal condition that affects male physical and cognitive development. Its signs and symptoms vary among affected individuals.

By the late 1950s, researchers discovered that men with Klinefelter syndrome, as this group of symptoms came to be called, had an extra sex chromosome, XXY instead of the usual male arrangement, XY. In the early 1970s, researchers around the world sought to identify mal... More »
By Vincent Iannelli, M.D., About.com Guide

Klinefelter syndrome - Mayo Clinic


Jun 25, 2013 ... Klinefelter syndrome is a genetic condition that results when a boy is born with an extra copy of the X chromosome. Klinefelter syndrome is a ...

Learning About Klinefelter Syndrome


What is Klinefelter syndrome? Klinefelter syndrome is a condition that occurs in men as a result of an extra X chromosome. The most common symptom is ...

Klinefelter Syndrome Symptoms, Causes, and Treatment - WebMD


What is Klinefelter syndrome? Klinefelter syndrome is a genetic disorder that affects males. Klinefelter syndrome occurs when a boy is born with one or more ...

Klinefelter Syndrome: Background, Pathophysiology, Epidemiology


Jul 1, 2015 ... In 1959, these men with Klinefelter syndrome were discovered to have an extra X chromosome (genotype XXY) instead of the usual male sex ...

47, XXY (Klinefelter syndrome) - Learn Genetics - University of Utah


[Note: Much of the medical literature defines Klinefelter syndrome as a person with an XXY chromosomal arrangement, and considers every XXY individual to ...

Klinefelter syndrome | Define Klinefelter syndrome at Dictionary.com
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Popular Q&A
Q: What are the effects of klinefelters syndrome?
A: The genotype for Klinefelter's is XXY, so the outward appearance is a male with some feminine features like breast development, less facial hair, small testes, ... Read More »
Source: wiki.answers.com
Q: Klinefelter's Syndrome?
A: There are many fact sheets on the Internet for Klinefelter's. You should get plenty of information about treatments, symptoms, genetics, and so on. Here's a sta... Read More »
Source: answers.yahoo.com
Q: How is Klinefelter's syndrome inherited.
A: Klinefelter's syndrome is a condition that occurs in men who have an extra X chromosome in most of their Read More »
Source: www.chacha.com
Q: How klinefelter syndrome progression?
A: hi my name is ken i want to know about klinefelter syndrome disease progession so i can do my power point in my class. oh yeah tell me easy answer because i am ... Read More »
Source: wiki.answers.com
Q: What are the genotypes of Klinefelter's syndrome.
A: Klinefelter's syndrome only has one genotype, it is XXY. Read More »
Source: www.answers.com