Definitions for y chromosome
This page provides all possible meanings and translations of the word y chromosome
Random House Webster's College Dictionary
a sex chromosome of humans and most mammals that is present only in males and is paired with anXchromosome.
Ref: Compare X chromosome.
Origin of Y chromosome:
the sex chromosome that is carried by men
"human males normally have one X chromosome and one Y chromosome"
A mammalian sex chromosome, occurring only in male cells. Cells of females have a pair of X chromosomes while cells of males have an X and a Y.
The Y chromosome is one of two sex-determining chromosomes in mammals, including humans. In mammals, the Y chromosome contains the gene SRY, which triggers testicle development if present. The human Y chromosome is composed of about 50 million base pairs. DNA in the Y chromosome is passed from father to son, and Y-DNA analysis may thus be used in genealogical research. With a 30% difference between humans and chimpanzees, the Y chromosome is one of the fastest evolving parts of the human genome.
U.S. National Library of Medicine
The male sex chromosome, being the differential sex chromosome carried by half the male gametes and none of the female gametes in humans and in some other male-heterogametic species in which the homologue of the X chromosome has been retained.
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"y chromosome." Definitions.net. STANDS4 LLC, 2014. Web. 19 Dec. 2014. <http://www.definitions.net/definition/y chromosome>.