Sex chromosome - Wikipedia
An allosome (also referred to as a sex chromosome, heterotypical chromosome, heterochromosome, or idiochromosome) is a chromosome that differs from an ordinary autosome in form, size, and behavior. The human sex chromosomes, a typical pair of mammal allosomes, determine the sex of an individual created in sexual reproduction.Autosomes differ from allosomes because autosomes appear in pairs ...
INTRODUCTION. Sex chromosome abnormalities are due to numeric abnormalities (eg, aneuploidies such as monosomy X) or structural defects (eg, isochromosome Xq leading to Turner syndrome) involving the X and Y chromosomes.
sex chromosome - Merriam-Webster
: a chromosome that is inherited differently in the two sexes, that is concerned directly with the inheritance of sex, and that is the seat of factors governing the inheritance of various sex-linked and sex-limited characters — compare x chromosome, y chromosome
XY sex-determination system - Wikipedia
The XY sex-determination system is the sex-determination system found in humans, most other mammals, some insects (), some snakes, and some plants ().In this system, the sex of an individual is determined by a pair of sex chromosomes.Females typically have two of the same kind of sex chromosome (XX), and are called the homogametic sex.Males typically have two different kinds of sex chromosomes ...
Klinefelter Syndrome Support Group website
DISCLAIMER The information, text, graphics, and links provided on this site are provided for those seeking information about Klinefelter Syndrome/XXY.
WHO | Gender and Genetics
Humans are born with 46 chromosomes in 23 pairs. The X and Y chromosomes determine a person’s sex. Most women are 46XX and most men are 46XY. Research suggests, however, that in a few births per thousand some individuals will be born with a single sex chromosome (45X or 45Y) (sex monosomies) and ...
The End of Men? Male Sex Chromosome Is Slowly Disappearing
If the same rate of degeneration continues, the Y chromosome has just 4.6 million years left before it disappears completely.
Know more about Chromosomal disorders. Our genetic information is encoded in DNA, which is packaged as chromosomes in our cells. Human cells have 23 pairs of chromosomes (22 pairs of autosomes and one pair of sex chromosomes), giving a total of 46 per cell.
Basic Principles of Genetics: Glossary of Terms
the genetically inherited condition in which there is a marked deficiency of pigmentation in skin, hair, and eyes. An individual with these traits is an "albino."
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