sex chromosome


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sex chromosome

n.
Either of a pair of chromosomes in diploid cells, or a single chromosome in haploid cells, carrying genes that determine the sex and sex-linked characteristics of an organism. Most mammals, including humans, have one pair of sex chromosomes in diploid cells, designated XX in females and XY in males.

sex chromosome

n
(Genetics) either of the chromosomes determining the sex of animals. See also X-chromosome, Y-chromosome

sex′ chro`mosome


n.
a chromosome that determines the sex of an individual.

sex chromosome

Either of a pair of chromosomes, usually called X and Y, that in combination determine the sex of an individual in many animals and in some plants, with XX resulting in a female and XY in a male. Sex chromosomes carry the genes that control the development of reproductive organs and secondary sex characteristics.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sex chromosome - (genetics) a chromosome that determines the sex of an individual; "mammals normally have two sex chromosomes"
chromosome - a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order; "humans have 22 chromosome pairs plus two sex chromosomes"
X chromosome - the sex chromosome that is present in both sexes: singly in males and doubly in females; "human females normally have two X chromosomes"
XX - (genetics) normal complement of sex chromosomes in a female
XXX - (genetics) abnormal complement of three X chromosomes in a female
XXY - (genetics) abnormal complement of sex hormones in a male resulting in Klinefelter's syndrome
XY - (genetics) normal complement of sex hormones in a male
XYY - (genetics) abnormal complement of sex hormones in a male who has two Y chromosomes
Y chromosome - the sex chromosome that is carried by men; "human males normally have one X chromosome and one Y chromosome"
genetic science, genetics - the branch of biology that studies heredity and variation in organisms
References in periodicals archive ?
In the purest sense of the term, a sex-linked trait is simply one that is carried on a gene attached, or linked, to either the male or the female sex chromosome.
Patients without karyotyping results, mixed sex chromosome or XX karyotypes were excluded from the study.
Panorama's unique technology enables it to determine zygosity and each twin's gender while also allowing it to identify risk for more genetic conditions in twin pregnancies than other NIPTs, including monosomy X, sex chromosome trisomies, and 22q11.
Klinefelter Syndrome and Trisomy X are known as sex chromosome aneuploidy, or variations in the typical number of chromosomes.
Although models for sex chromosome evolution have been proposed, they have been difficult to empirically test, largely because most model systems are at a terminal phase of sex chromosome divergence, and the majority of studies have therefore focused on the consequences of sex chromosome evolution.
The association between sperm sex chromosome disomy and semen concentration, motility, and morphology.
The results provide insight into the sex chromosome complement in the most-recent common ancestor of the Cyprinodontina.
Females are heterogametic (Z0 or WZ) and males are homogametic (ZZ), although sporadic rearrangements created multiple sex chromosome systems in some species (Traut et al.
48,XXYY syndrome is a rare sex chromosome abnormality.
In consideration of the illegitimacy of antenatal fetal gender authentication without medical purposes in China, the chromosome aberrations of the sex chromosome are usually ignored.
In males, one sex chromosome is an X chromosome, which they inherited from their mother while the other is a Y chromosome that came from their father.