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Chromosome 22 is the second smallest human chromosome, spanning about 51 million DNA base pairs and representing between 1.5 and 2% of the total DNA in cells. In 1999, researchers working on the Human Genome Project announced they had determined the sequence of base pairs that make up this chromosome. Chromosome 22 was the first human ...
[6] [7] The length of the spacer region corresponds to approximately one (12 basepairs) or two turns (23 basepairs) of the DNA helix. Following what is known as the 12/23 Rule, gene segments to be recombined are usually adjacent to RSSs of different spacer lengths ( i.e. , one has a "12RSS" and one has a "23RSS"). [ 8 ]
The location of NORs and the nucleolar cycle in human cells. Nucleolus organizer regions (NORs) are chromosomal regions crucial for the formation of the nucleolus.In humans, the NORs are located on the short arms of the acrocentric chromosomes 13, 14, 15, 21 and 22, the genes RNR1, RNR2, RNR3, RNR4, and RNR5 respectively. [1]
If the chromosome is a submetacentric chromosome (One arm big and the other arm small) then the centromere divides each chromosome into two regions: the smaller one, which is the p region, and the bigger one, the q region. The sister chromatids will be distributed to each daughter cell at the end of the cell division.
The shorter arm of a chromosome is termed the p arm or p-arm, while the longer arm is the q arm or q-arm. The chromosomal locus of a typical gene, for example, might be written 3p22.1, where: [citation needed] 3 = chromosome 3; p = p-arm; 22 = region 2, band 2 (read as "two, two", not "twenty-two") 1 = sub-band 1
Date: 22 April 2017: Source: Based on Ensembl's GRCh38.p10 ideogram.. Numerical raw data for human chromosome of assembly GRCh38.p3 (shown below) is available at NCBI's Genome Decoration Page.
The locus of C22orf15 in humans is on the long arm (q) of chromosome 22 in region 11, band 23 (22q11.23); it spans 3,340 base pairs on the plus strand from base pair 23,762,523 to 23,765,863 and contains ten introns and six exons. [5] [6] Overview of C22orf15 gene transcript C22orf15 Gene Neighborhood
Human chromosome 22 gene stubs (190 P) Pages in category "Genes on human chromosome 22" The following 200 pages are in this category, out of approximately 329 total.