an aneuploid condition in a normal diploid cell in which there a three copies of a particular chromosome instead of two.
The abnormal possession of three copies of a chromosome; trisomy 21 is responsible for Down syndrome.
Where there are three chromosomes rather than the usual pair, this is called a trisomy
Addition of a third chromosome to an otherwise normal cell.
The presence of a third chromosome added to the normal pair. For example, trisomy 21, three of chromosome 21 is associated with Down syndrome.
The presence of three copies of a homologous chromosome in a nucleus that is otherwise diploid.
A condition wherein there are three rather than the usual pair of homologous chromosomes within the cell nucleus.
The presence in the nucleus of three copies of a chromosome instead of the usual two
chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell
a duplication of an area of a chromosome
The presence of an extra chromosome, yielding a total of three chromosomes of that particular type instead of a pair, e.g. trisomy 21, which causes Down syndrome.
A condition where 3 chromosomes of one type are present in a cell. The commonest form of this is Down's Syndrome.
Having three copies of a particular chromosome in each somatic (body) cell instead of the normal two copies. This leads to certain conditions for example Down syndrome (trisomy 21) or Edwards syndrome (trisomy 18)
3 copies of a chromosome instead of the usual pair, generally resulting in structural birth defects and mental retardation. Humans normally have 23 pairs of chromosomes, numbered 1-22 plus the sex-determining pair. The most common trisomy is an extra 21 chromosome (trisomy 21 or Down syndrome); trisomy 13 and 18 are also seen.
The presence of an extra chromosome, in addition to the normal pair. In humans, this would result in a total of 47 chromosomes. An example of trisomy is trisomy 21, which is also known as Down syndrome.
TRI-som-mee A cell with one extra chromosome. 298
Having three of a given chromosome instead of the usual two. Trisomy for chromosome 21 is the cause of Down syndrome. Trisomy for chromosome 18 and trisomy for chromosome 13 cause very serious birth defects.
Three copies of a given chromosome per cell.
Presence of an additional copy of a chromosome, so that there are three copies instead of the usual two. The most common trisomy is trisomy of chromosome 21, which causes Down's syndrome
The presence in the cells of three copies of a certain chromosome instead of the normal two copies.
Three copies of a particular chromosome are present in a cell resulting in 47 chromosomes instead of the usual 46.
Possessing three copies of a particular chromosome instead of the normal two copies. There are no words under U at this time. There are no words under V at this time. There are no words under W at this time.
A chromosomal abnormality characterized by one more than the normal number of chromosomes. Normally, cells contain two of each chromosome. In trisomy, cells contain three copies of a specific chromosome.
The presence of three copies of a particular chromosome, i.e. trisomy 21. Three copies of part of a chromosome is partial trisomy.
A condition where a cell has an extra chromosome.
A chromosomal abnormality where three copies of a chromosome exist within a cell nucleus.
(adj: trisomic) (Gr. treis, three + soma, body) An otherwise diploid cell or organism that has an extra chromosome of one pair (chromosome formula: 2n + 1). cf disomy; monosomy.
existence of an extra (third) copy of a chromosome (e.g., Trisomy 13, 16, 18, 21 and 22)
Term indicating the presence of an extra whole chromosome.
A pair of chromosomes with an identical extra chromosome.
the condition where one extra chromosome is present, homologous with one of the existing pairs, so that one kind of chromosome is present in triplicate. [Source: Agricultural Genome Information System, USDA
having an extra chromosome, possessing three copies of a particular chromosome instead of the normal two.
The presence of an additional whole chromosome.
The presence of three chromosomes of one type instead of the normal two.
An abnormality of the chromosome complement in which there is an extra chromosome seen on the karyotype. The extra chromosome can be an autosome, such as in Down syndrome (trisomy 21), or a sex chromosome, such as triple-X syndrome (47,XXX), Klinefelter syndrome (47,XXY) and extra-Y-chromosome syndrome (47,XYY).
having three copies of one chromosome, rather than two copies.
Condition in which an extra chromosome is present.
The presence of an extra chromosome in addition to the usual pair. Down syndrome is an example of a condition caused by trisomy.