Y chromosome


Also found in: Thesaurus, Medical, Financial, Acronyms, Encyclopedia, Wikipedia.
Related to Y chromosome: Y chromosome Adam

Y chromosome

or Y-chro·mo·some (wī′krō′mə-sōm′)
n.
The sex chromosome associated with male characteristics in mammals, not occurring in females and occurring with one X chromosome in the male sex-chromosome pair.

Y chromosome



n.
a sex chromosome of humans and most mammals that is present only in males and is paired with an Xchromosome. Compare X chromosome.
[1920–25]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Y chromosome - the sex chromosome that is carried by men; "human males normally have one X chromosome and one Y chromosome"
sex chromosome - (genetics) a chromosome that determines the sex of an individual; "mammals normally have two sex chromosomes"
References in periodicals archive ?
In June, Forsberg's team reported linking Y chromosome loss to a higher risk of several types of cancer and a decreased life span in a smaller group of men.
Some mammals have already lost their Y chromosome, though they still have males and females and reproduce normally.
About 310 million years ago, there was no Y chromosome as we know it.
Proponents of the so-called rotting Y theory have been predicting the eventual extinction of the Y chromosome since it was first discovered that the Y has lost hundreds of genes over the past 300 million years.
Deborah Charlesworth of the University of Edinburgh says, "It is not rash to call this a Y chromosome or at least an evolving Y.
I think anybody who knows the biblical story about Aaron and this tradition of the priesthood going from father to son, and is aware that the Y chromosome is inherited in the same way, would think of this question,'' said Dr.
As a result, a man should have a carbon copy of the Y chromosome of his father, grandfather and so on.
28 Nature, two Australian scientists summarized recent research showing that the human Y chromosome gradually accumulates mutations that deactivate its few genes.
The Y chromosome segments in the new analysis exhibit much less variability than DNA regions that have been studied in other chromosomes.
Comparing the sex chromosomes of six species, Hoekstra found that the XY females have forms of the Y chromosome unique to their species.