Triple X syndrome - Genetics Home Reference - NIH - xxx syndrome in boys

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Triple X syndrome - Wikipedia xxx syndrome in boys


Triple X syndrome, also called trisomy X or 47,XXX, is characterized by the presence of an additional X chromosome in each of a female's cells. Although females with this condition may be taller than average, this chromosomal change typically causes no unusual physical features.

Triple X syndrome occurs in around 1 in 1, girls. On average, five to ten girls with triple X syndrome are born in the United States each day. History. The first published report of a woman with a 47,XXX karyotype was by Patricia A. Jacobs, et al. at Western General Hospital in Edinburgh, Scotland, in Complications: Learning difficulties, decreased .

XYY syndrome is a genetic condition in which a male has an extra Y chromosome. Symptoms are usually few. They may include being taller than average, acne, and an increased risk of learning problems. The person is generally otherwise normal, including normal fertility.. The condition is generally not inherited from a person's parents but rather occurs as a result of a random event during sperm Causes: Genetics.

Triple X syndrome (also known as XXX syndrome, 47,XXX, and trisomy X) is a genetic condition found in girls only. Girls who have it may be taller than average, but the symptoms can vary greatly.