This is an algorithm that uses a short-cut or educated guess in order to reduce the amount of time necessary to execute an algorithm or method.
The original author of the CLUSTAL suite of programs for performing automated, progressive multiple sequence alignment.
This is a gene or morphological character that shares a common ancestry with a different gene or morphological character.
Descended from a common ancestor. Defined in 1843 by Richard Owen, the British Palaeontologist as the "same organ under every variety of form and function". For molecular sequence data, it is taken to mean that two sequences or even two characters within sequences are descended from a common ancestor.
see Homologous.
The existance of characters that have been subject to reversals, convergences or parallelisms.
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