What does sex linkage mean?

Definitions for sex linkage
sex link·age

Here are all the possible meanings and translations of the word sex linkage.

Princeton's WordNet

  1. sex linkage(noun)

    an association between genes in sex chromosomes that makes some characteristics appear more frequently in one sex than in the other

Freebase

  1. Sex linkage

    Sex linkage is the phenotypic expression of an allele related to the chromosomal sex of the individual. This mode of inheritance is in contrast to the inheritance of traits on autosomal chromosomes, where both sexes have the same probability of inheritance. Since humans have many more genes on the X than the Y, there are many more X-linked traits than Y-linked traits. In mammals, the female is the homogametic sex, with two X chromosomes, while the male is heterogametic, with one X and one Y chromosome. Genes on the X or Y chromosome are called sex-linked. In birds, the opposite is true: the male is the homogametic sex, having two Z chromosomes, and the female is heterogametic, having one Z and one W chromosome. X-linked recessive traits are expressed in all heterogametics, but are only expressed in those homogametics that are homozygous for the recessive allele. For example, an X-linked recessive allele in humans causes hemophilia. Hemophilia is much more common in males than females because males are hemizygous - they only have one copy of the gene in question - and therefore express the trait when they inherit one mutant allele. In contrast, a female must inherit two mutant alleles, a less frequent event since the mutant allele is rare in the population. Tsarevich Alexei of Russia was the most famous sufferer of X-linked hemophilia.¹¹

Numerology

  1. Chaldean Numerology

    The numerical value of sex linkage in Chaldean Numerology is: 6

  2. Pythagorean Numerology

    The numerical value of sex linkage in Pythagorean Numerology is: 8

Images & Illustrations of sex linkage

  1. sex linkagesex linkagesex linkage

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"sex linkage." Definitions.net. STANDS4 LLC, 2019. Web. 18 Feb. 2019. <https://www.definitions.net/definition/sex+linkage>.

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