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X-linked recessive
X-linked recessive In genetics, a defect that is carried on the X chromosome, and that can express itself only if both X chromosomes in an individual carry the defect (in females) or if the X chromosome carrying the defect is paired with a Y chromosome (in males). These defects are much more commonly expressed in males than in females.
RELATED TERMS--------------------------------------
Genetics
The scientific study of heredity. Genetics pertains to humans and all other organisms. So, for example, there is human genetics, mouse genetics, fruitfly genetics, etc.
Chromosome
A structural unit within a eukaryotic nucleus that carries genes. A chromosome consists of a long, continuous strand of DNA and associated proteins.
Chromosomes
Filaments of genetic material in every cell nucleus that are made up of genes and that transmit genetic information from one generation of cells to the next.
SIMILAR TERMS--------------------------------------
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Xanax
This is a prescription drug used to treat anxiety. It is a central nervous system depressant, and can therefore have a negative impact on coordination and mental alertness. Side effects typically include drowsiness and/or mood changes.
Xerostomia
Dry mouth or decrease in the production of saliva .
X inactivation
Normal inactivation of one of the two X chromosomes in females.
X chromosome
One of the two sex chromosomes, the other being the Y chromosome. Females have two X chromosomes, and males have one X chromosome and one Y chromosome.
Xanith
In Arabic, the term usually translated as male homosexual, but applied only to men who partially impersonate women in clothing, manner, and life-style, and in their sexuoerotic role with other men.
X-linked recessive
XO syndrome
See Turner's syndrome.
XXY syndrome
See Klinefelter's syndrome.
Xanthelasma
Fatty deposits that appear as yellowish patches, or plaques, under the skin, often appearing in or near the eyelids.
Xeroderma
Dryness of the skin.
X-rays
Electromagnetic radiations that, because of their penetrating power, are used to record on film shadows of the varying densities within a part of the body.
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