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XYY syndrome, also known as Jacobs syndrome, is an aneuploid genetic condition in which a male has an extra Y chromosome. [1] There are usually few symptoms. [2] These may include being taller than average and an increased risk of learning disabilities. [1] [2] The person is generally otherwise normal, including typical rates of fertility. [1]
The presentation of XYYY syndrome is variable and at this time not entirely clear. As all known cases were diagnosed postnatally (after birth), and the similar XYY syndrome is known to have a milder phenotype in prenatally than postnatally diagnosed cases, it is suspected that many cases of XYYY syndrome may be mild or asymptomatic.
Jacobs has received many awards in recognition of her work, including the 1999 Mauro Baschirotto Award of the European Society of Human Genetics and the 2011 March of Dimes Prize in Developmental Biology. Her services to genetics saw her named an OBE in 1999. [1] Jacobs was elected as a Foreign Associate of the US National Academy of Sciences ...
Jacobsen syndrome is a rare chromosomal disorder resulting from deletion of genes from chromosome 11 that includes band 11q24.1. It is a congenital disorder . Since the deletion takes place on the q arm of chromosome 11, it is also called 11q terminal deletion disorder. [ 1 ]
Klinefelter syndrome is not an inherited condition. The extra X chromosome comes from the mother in approximately 50% of the cases. Maternal age is the only known risk factor. Women at 40 years have a four-times-higher risk of a child with Klinefelter syndrome than women aged 24 years. [14] [34] [35]
The genetic condition, known as Trisomy 21, results in an extra copy of chromosome 21. A video shared on Instagram by the Rangers shows Burger talking about what the number switch means to him. AP ...
XXXYY syndrome, also known as 49,XXXYY, is a chromosomal disorder in which a male has three copies of the X chromosome and two copies of the Y chromosome.XXXYY syndrome is exceptionally rare, with only eight recorded cases.
The following is a list of genetic disorders and if known, type of mutation and for the chromosome involved. Although the parlance "disease-causing gene" is common, it is the occurrence of an abnormality in the parents that causes the impairment to develop within the child.