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trisomy

A Dictionary of Biology | 2004 | Copyright

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).

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trisomy

A Dictionary of Nursing | 2008 | Copyright

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.

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"trisomy." A Dictionary of Nursing. 2008. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

"trisomy." A Dictionary of Nursing. 2008. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O62-trisomy.html

"trisomy." A Dictionary of Nursing. 2008. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-trisomy.html

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trisomy

A Dictionary of Plant Sciences | 1998 | | Copyright

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

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MICHAEL ALLABY. "trisomy." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "trisomy." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O7-trisomy.html

MICHAEL ALLABY. "trisomy." A Dictionary of Plant Sciences. 1998. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-trisomy.html

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Free newspaper and magazine articles

	Trisomy 13 survival can exceed 1 year. (Seen in 8% of Affected Infants). Magazine article from: OB GYN News; 3/1/2003
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