Coding Region

A coding region is DNA that contains genes. In genetic genealogy, this most often refers to the part of the mitochondrial genome that contains genes.


A clade is a group of related individuals.


A chromosome is a structure found in the nucleus of a cell that contains genetic material. Humans have 23 pairs of chromosomes: 22 pairs of autosomes and one pair of sex chromosomes.


A chromatid is one of two strands of a chromosome.


A centromere is one of the parts of each chromosome. It is a dense area that joins together the two chromatids (arms) of each chromosome.

centiMorgan (cM)

A centiMorgan (cM) is a measurement of how likely a segment of DNA is to recombine from one generation to the next. A single centiMorgan is considered equivalent to a 1% (1/100) chance that a [...]