Definitions for y chromosome

This page provides all possible meanings and translations of the word y chromosome

Random House Webster's College Dictionary

Y chromosome(n.)

  1. a sex chromosome of humans and most mammals that is present only in males and is paired with anXchromosome.

    Category: Genetics

    Ref: Compare X chromosome.

Origin of Y chromosome:

1920–25

Princeton's WordNet

  1. Y chromosome(noun)

    the sex chromosome that is carried by men

    "human males normally have one X chromosome and one Y chromosome"

Wiktionary

  1. Y chromosome(Noun)

    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.

Freebase

  1. Y chromosome

    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

  1. Y Chromosome

    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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