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XX male syndromeXX male syndrome (also called de la Chapelle syndrome) is a rare sex chromosomal disorder in men. Usually it is caused by unequal crossing over between X and Y chromosomes during meiosis. Symptoms include small testes, gynecomastia and sterility. Additional recommended knowledgeMen typically have one X chromosome and one Y chromosome in each diploid cell of their bodies. Women typically have two X chromosomes. XX males have two X chromosomes, but otherwise appear to be male.
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Categories: Diseases | Genetic disorders | Genetics |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "XX_male_syndrome". A list of authors is available in Wikipedia. |