X chromosome

X chromosome
X chromosome n a sex chromosome that usu. occurs paired in each female cell and single in each male cell in species in which the male typically has two unlike sex chromosomes compare Y CHROMOSOME

* * *

the sex chromosome present in both sexes. Women have two X chromosomes and men one. Genes for some important genetic disorders, including haemophilia, are carried on the X chromosomes; these genes are described as sex-linked. Compare Y chromosome.

* * *

the sex chromosome present in two copies in female somatic cells of organisms in which the male is the heterogametic sex, as in humans; it is carried by half the male gametes and all female gametes.

Medical dictionary. 2011.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Chromosome 21 (human) — Chromosome 21 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. The trisomy of the 21st chromosome causes Down Syndrome. Chromosome 21 is the smallest human chromosome, 47 million nucleotides… …   Wikipedia

  • Chromosome Y Humain — Le chromosome Y est l un des deux chromosomes sexuels humains (l autre chromosome sexuel est le chromosome X). Les chromosomes sexuels sont l une des 23 paires de chromosomes humains. Le chromosome Y s étend sur environ 50 millions de paires de… …   Wikipédia en Français

  • Chromosome acrocentrique — Chromosome Description de la structure d’un chromosome. Le chromosome est l élement porteur de l information génétique. Les chromosomes contiennent les gènes et permettent leur distribution égale dans les deux cellules filles lors de la division… …   Wikipédia en Français

  • Chromosome y humain — Le chromosome Y est l un des deux chromosomes sexuels humains (l autre chromosome sexuel est le chromosome X). Les chromosomes sexuels sont l une des 23 paires de chromosomes humains. Le chromosome Y s étend sur environ 50 millions de paires de… …   Wikipédia en Français

  • Chromosome X Humain — Portail de la biologie Le chromosome X …   Wikipédia en Français

  • Chromosome X humain — Portail de la biologie Le chromosome X …   Wikipédia en Français

  • Chromosome x humain — Portail de la biologie Le chromosome X …   Wikipédia en Français

  • Chromosome 2 (human) — Chromosome 2 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 2 is the second largest human chromosome, spanning more than 237 million base pairs [1] (the building material of DNA)… …   Wikipedia

  • Chromosome 5 (human) — Chromosome 5 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 5 spans about 181 million base pairs (the building blocks of DNA) and represents almost 6% of the total DNA in cells.… …   Wikipedia

  • Chromosome 13 (human) — Chromosome 13 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 13 spans about 114 million base pairs (the building material of DNA) and represents between 3.5 and 4 % of the… …   Wikipedia

  • Chromosome 7 (human) — Chromosome 7 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 7 spans more than 158 million base pairs (the building material of DNA) and represents between 5 and 5.5 percent of the… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”