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The Cambridge Reference Sequence (CRS) for human mitochondrial DNA was first announced in 1981. [ 2 ] A group led by Fred Sanger at the University of Cambridge had sequenced the mitochondrial genome of one woman of European descent [ 3 ] during the 1970s, determining it to have a length of 16,569 base pairs (0.0006% of the nuclear human genome ...
Human mitochondrial genome showing hypervariable regions I to III (green boxes) located in the control region (CR; grey box). There are two mitochondrial hypervariable regions used in human mitochondrial genealogical DNA testing. HVR1 is considered a "low resolution" region and HVR2 is considered a "high resolution" region.
Mitochondrial DNA (mtDNA and mDNA) is the DNA located in the mitochondria organelles in a eukaryotic cell that converts chemical energy from food into adenosine triphosphate (ATP). Mitochondrial DNA is a small portion of the DNA contained in a eukaryotic cell; most of the DNA is in the cell nucleus , and, in plants and algae, the DNA also is ...
The two most common mtDNA tests are a sequence of HVR1 and HVR2 and a full sequence of the mitochondria. Generally, testing only the HVRs has limited genealogical use so it is increasingly popular and accessible to have a full sequence. The full mtDNA sequence is only offered by Family Tree DNA among the major testing companies [26] and is ...
The human mitochondrial genome is the entirety of hereditary information contained in human mitochondria. Mitochondria are small structures in cells that generate energy for the cell to use, and are hence referred to as the "powerhouses" of the cell. Mitochondrial DNA (mtDNA) is not transmitted through nuclear DNA (nDNA).
The mtDNA control region is an area of the mitochondrial genome which is non-coding DNA. This region controls RNA and DNA synthesis. [1] It is the most polymorphic region of the human mtDNA genome, [2] with polymorphism concentrated in hypervariable regions. The average nucleotide diversity in these regions is 1.7%. [3]
Translocated mitochondrial sequences in the nuclear genome have the potential to be amplified in addition to, or even instead of, the authentic target mtDNA sequence that can confound population genetic and phylogenetic analyses since mtDNA has been widely used for population mapping, evolutionary and phylogenic studies, species identification ...
The Cambridge Reference Sequence (CRS), which until recently was the human mitochondrial sequence to which all others were compared, belongs to haplogroup H2a2a1. [4] Several independent studies conclude that haplogroup H probably evolved in Western Asia c. 25,000 years ago.