Skip to main content
Select Source:

trisomy

trisomy The condition of a nucleus, cell, or organism in which one of the pairs of homologous chromosomes has gained an additional chromosome, resulting in a chromosome number of 2n + 1 (see aneuploid). Trisomy is the cause of a number of human genetic abnormalities, including Down's syndrome; Patau's syndrome, in which there is an extra chromosome 13 (trisomy 13); and Edwards' syndrome, in which there is an extra chromosome 18 (trisomy 18).

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"trisomy." A Dictionary of Biology. . Encyclopedia.com. 18 Aug. 2017 <http://www.encyclopedia.com>.

"trisomy." A Dictionary of Biology. . Encyclopedia.com. (August 18, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/trisomy-0

"trisomy." A Dictionary of Biology. . Retrieved August 18, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/trisomy-0

trisomy

trisomy (try-soh-mi) n. a condition in which there is one extra chromosome present in each cell in addition to the normal (diploid) chromosome set; the cause of such disorders as Down's syndrome.
trisomic (try-soh-mik) adj.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"trisomy." A Dictionary of Nursing. . Encyclopedia.com. 18 Aug. 2017 <http://www.encyclopedia.com>.

"trisomy." A Dictionary of Nursing. . Encyclopedia.com. (August 18, 2017). http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/trisomy

"trisomy." A Dictionary of Nursing. . Retrieved August 18, 2017 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/trisomy

trisomy

trisomy The condition in which a particular chromosome is represented by 3 members (i.e. the triploid condition). Compare DISOMY, NULLISOMY, POLYSOMY, and TETRASOMY.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"trisomy." A Dictionary of Plant Sciences. . Encyclopedia.com. 18 Aug. 2017 <http://www.encyclopedia.com>.

"trisomy." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 18, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/trisomy

"trisomy." A Dictionary of Plant Sciences. . Retrieved August 18, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/trisomy