describing genes (or the characteristics controlled by them) that are carried on the sex chromosomes, usually the X chromosome. The genes for certain disorders, such as haemophilia, are carried on the X chromosome; these genes and disorders are described as X-linked. Since these sex-linked genes are recessive, men are more likely to have the diseases since they have only one X chromosome; women can carry the genes but their harmful effects are usually masked by the dominant (normal) alleles on their second X chromosome.

The new mediacal dictionary. 2014.

Look at other dictionaries:

  • sex-linked — sex′ linked adj. 1) gen (of a gene) located in a sex chromosome 2) gen (of a character) determined by a sex linked gene • Etymology: 1910–15 …   From formal English to slang

  • sex-linked — See sex linkage. * * * sex linked adj 1) located in a sex chromosome <a sex linked gene> 2) mediated by a sex linked gene <a sex linked character> * * * adj. describing genes (or the characteristics controlled by them) that are… …   Medical dictionary

  • sex-linked — adjective Date: 1912 1. located on a sex chromosome < a sex linked gene > 2. mediated by a sex linked gene < a sex linked character > …   New Collegiate Dictionary

  • sex-linked — adjective technical an illness or medical condition that is sex linked is caused by the genes of only one sex and so is passed to children by parents of that sex …   Longman dictionary of contemporary English

  • sex-linked — /seks lingkt /, adj. Genetics. 1. (of a gene) located in a sex chromosome. 2. (of a character) determined by a gene located in a sex chromosome. [1910 15] * * * …   Universalium

  • sex-linked — adjective concerning characteristics that are determined by genes carried on the sex chromosomes (on the X chromosome in particular) • Pertains to noun: ↑sex linkage …   Useful english dictionary

  • sex-linked inheritance — sex linked inheritance. См. сцепленное с полом наследование. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • sex-linked disorder — A genetic defect, usually due to a gene on the unpaired portion of the X chromosome. Recessive X linked alleles are fully expressed in the heterogametic sex because they can have only one copy of the gene. Thus X linked mutant disorders are more… …   Dictionary of molecular biology

  • sex-linked genes — Genes in the sex chromosomes, linked in heredity to the genes determining sex …   Dictionary of invertebrate zoology

  • sex-linked gene — a gene carried on a sex chromosome (X or Y); the term has been used synonymously with X linked gene (q.v.), because the human Y chromosome carries so few genes other than those determining maleness, but is now little used to avoid ambiguity …   Medical dictionary

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