The length of a particular branch in an evolutionary tree.In certain types of evolutionary trees, the branch length is used to represent the amount of evolutionary change or time.For example, this can refer to the grouping together of a protein into distinct parts of the cell or of networks of genetic interactions into distinct functional units.
The term refers to a spatial gradient in any measurable characteristic—for example, allele frequency or the mean of a quantitative trait.
Subdivision of molecules, cells, or genetic functions into discrete spatial or temporal units.
It is calculated as the ratio of the minimum number of evolutionary state changes (aka steps) that could be seen from all possible trees divided by the actual number of changes on the tree being examined.
Loci made up of microsatellite repeats (e.g., ATATATAT) in which, when the number of copies of the repeat changes, the phenotype of the cell changes drastically.
To line up different DNA, RNA, or protein sequences.