 | Chromosome 21 is one of the 23 pairs of chromosomes in humans. Chromosome 21 is both the smallest human autosome and chromosome, with 45 million base... 33 KB (2,969 words) - 20:55, 20 April 2024 |
A chromosomal abnormality, chromosomal anomaly, chromosomal aberration, chromosomal mutation, or chromosomal disorder is a missing, extra, or irregular... 18 KB (1,966 words) - 10:36, 29 April 2024 |
 | A chromosome is a package of DNA with part or all of the genetic material of an organism. In most chromosomes, the very long thin DNA fibers are coated... 65 KB (6,602 words) - 10:25, 29 April 2024 |
 | Down syndrome (redirect from Trisomy 21) syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. It is usually associated with... 143 KB (14,341 words) - 05:54, 1 May 2024 |
 | syndrome is a chromosomal abnormality characterized by the presence of an extra copy of genetic material on chromosome 21, either in whole (trisomy 21) or part... 9 KB (1,068 words) - 04:49, 15 February 2024 |
 | In genetics, chromosome translocation is a phenomenon that results in unusual rearrangement of chromosomes. This includes balanced and unbalanced translocation... 19 KB (1,523 words) - 17:33, 22 March 2024 |
 | Aneuploidy (redirect from Extra chromosome) miscarriage, and the most common extra autosomal chromosomes among live births are 21, 18 and 13. Chromosome abnormalities are detected in 1 of 160 live human... 36 KB (3,406 words) - 18:10, 26 April 2024 |
 | Karyotype (redirect from Chromosome banding) A karyotype is the general appearance of the complete set of chromosomes in the cells of a species or in an individual organism, mainly including their... 59 KB (6,991 words) - 06:36, 20 February 2024 |
 | Chromosome 2 is one of the twenty-three pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 2 is the second-largest... 40 KB (2,528 words) - 16:07, 12 March 2024 |
 | Chromosome 22 is one of the 23 pairs of chromosomes in human cells. Humans normally have two copies of chromosome 22 in each cell. Chromosome 22 is the... 27 KB (2,206 words) - 03:37, 10 March 2024 |
 | Trisomy 18 (redirect from Chromosome 18, trisomy) second-most common condition due to a third chromosome at birth, after Down syndrome for a third chromosome 21. Trisomy 18 occurs in around 1 in 5,000 live... 20 KB (1,921 words) - 00:58, 29 March 2024 |
 | X-inactivation (redirect from X chromosome inactivation) by which one of the copies of the X chromosome is inactivated in therian female mammals. The inactive X chromosome is silenced by being packaged into a... 49 KB (5,682 words) - 08:20, 20 February 2024 |
 | The Y chromosome is one of two sex chromosomes in therian mammals and other organisms. Along with the X chromosome, it is part of the XY sex-determination... 81 KB (8,086 words) - 15:00, 30 April 2024 |
 | Nondisjunction (redirect from Chromosomal nondisjunction) Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division (mitosis/meiosis). There are three... 25 KB (2,847 words) - 00:44, 9 February 2024 |
 | Autosome (redirect from Autosomal chromosome) An autosome is any chromosome that is not a sex chromosome. The members of an autosome pair in a diploid cell have the same morphology, unlike those in... 11 KB (1,092 words) - 16:51, 14 October 2023 |
 | A ring chromosome is an aberrant chromosome whose ends have fused together to form a ring. Ring chromosomes were first discovered by Lilian Vaughan Morgan... 15 KB (792 words) - 18:19, 31 May 2023 |
Chromosome 21 (Spanish: Cromosoma 21) is a Chilean crime thriller television series co-created by Matías Venables and Nico Martínez Bergen. The series... 7 KB (497 words) - 23:05, 28 December 2023 |
Lists of human genes (redirect from Lists of human genes by chromosome) 3 Chromosome 4 Chromosome 5 Chromosome 6 Chromosome 7 Chromosome 8 Chromosome 9 Chromosome 10 Chromosome 11 Chromosome 12 Chromosome 13 Chromosome 14... 2 KB (144 words) - 07:48, 28 March 2024 |
 | Chromosome 11 is one of the 23 pairs of chromosomes in humans. Humans normally have two copies of this chromosome. Chromosome 11 spans about 135 million... 28 KB (1,930 words) - 22:58, 28 March 2024 |
 | Polytene chromosomes are large chromosomes which have thousands of DNA strands. They provide a high level of function in certain tissues such as salivary... 16 KB (1,980 words) - 00:24, 31 October 2023 |
 | XY sex-determination system (redirect from Chromosome 23) individual is determined by a pair of sex chromosomes. Females have two of the same kind of sex chromosome (XX), and are called the homogametic sex. Males... 29 KB (3,396 words) - 03:47, 15 April 2024 |
 | Polysomy (category Chromosomal abnormalities) humans where affected individuals possess three copies (trisomy) of chromosome 21. Polysomic inheritance occurs during meiosis when chiasmata form between... 39 KB (4,295 words) - 19:58, 17 April 2024 |
 | The X chromosome is one of the two sex chromosomes in many organisms, including mammals, and is found in both males and females. It is a part of the XY... 42 KB (3,872 words) - 21:05, 30 April 2024 |
 | Chromosome 1 is the designation for the largest human chromosome. Humans have two copies of chromosome 1, as they do with all of the autosomes, which are... 46 KB (3,284 words) - 04:21, 11 April 2024 |
 | Centromere (redirect from Acrocentric chromosome) chromatids together during cell division. This constricted region of chromosome connects the sister chromatids, creating a short arm (p) and a long arm... 36 KB (3,757 words) - 12:25, 13 April 2024 |
 | Trisomy (redirect from Chromosomal triplication) instances of a particular chromosome, instead of the normal two. A trisomy is a type of aneuploidy (an abnormal number of chromosomes). Most organisms that... 6 KB (575 words) - 20:58, 18 October 2023 |
A bacterial artificial chromosome (BAC) is a DNA construct, based on a functional fertility plasmid (or F-plasmid), used for transforming and cloning in... 8 KB (925 words) - 06:42, 26 November 2023 |
 | Ploidy (redirect from Chromosome number) number of maternal and paternal chromosome copies, respectively, in each homologous chromosome pair, which chromosomes naturally exist as. Somatic cells... 53 KB (5,943 words) - 03:50, 28 April 2024 |
| Sex chromosomes (also referred to as allosomes, heterotypical chromosome, gonosomes, heterochromosomes, or idiochromosomes) are chromosomes that carry... 30 KB (3,654 words) - 20:28, 25 December 2023 |
| with the short arm of an acrocentric chromosome, such as in the chromosomes 13, 14, 15, 21, & 22. The Y chromosome can also contain satellites, although... 5 KB (531 words) - 02:51, 24 October 2023 |