aneuploidy
The condition in which a diploid cell is missing a chromosome or has an extra chromosome is called aneuploidy.
A diploid cell with an extra chromosome. Basically a diploid with an extra chromosome of one type, producing a chromosome number of the form 2n + l.
In females, the extra X chromosome becomes inactive and becomes the Barr body.
an error in meiotic cell division
A trisomy is a condition in which a person has three copies of a chromosome instead of the usual two copies. A person can have full trisomy (three copies in every cell) or mosaic trisomy (three copies in some cells but not all).
Extra- is the opposite of intra-. For instance, intracellular means within the cell, and extracellelular means outside the cell.
what is the meaning of chromosomes
An example of nondisjunction in genotype is when a pair of homologous chromosomes fails to separate properly during cell division, leading to one daughter cell receiving an extra chromosome (trisomy) and the other cell lacking that chromosome (monosomy). This can result in genetic disorders such as Down syndrome, which is caused by an extra copy of chromosome 21.
Down Syndrome is caused by a triplication of the 21st chromosome.
Medical term for within the cell is intra- (meaning within or inside) cellular (meaning cell) *** intracellular***-cytic
A telomere in medical terminology means the end of a chromosome that is used to regenerate cells. Every time a cell dies the telomere regenerates the cell.
If you mean haploid, as in half of each chromosome, or containing only one chromatid from each full chromosome, thenthe cell is called haploid.