Evolution

...al., The empire of chance: how probability changed science and everyday life (New York: Cambridge University Press, 1989). See also anagenesis argument from evolution atavism blind variation and selective retention catagenesis cladogenesis Convergent evolution evolu...

Speciation

... If a single population of a species changes enough over time to be designated a new species while the old species dies out, we have a process called anagenesis . Among simpler forms of life, such as bacteria , single mutations can cause drastic changes (called "saltation") that result in speciation in a very...

Anagenesis in Biological Dictionary

Anagenesis

Anagenesis , also known as "phyletic change," is the evolution of species involving an entire population rather than a branching event, as in cladogenesis. When enough mutations reach fixation in a population to significantly differentiate from an ancestral population, a new spe...

Cladogenesis

... off of new taxa from common ancestral lineages anagenesis n. A pattern of evolution that results in linear descent ... Diagram contrasting anagenesis and Cladogenesis from the University of Newfoundland ... anagenesis Versus Cladogenesis | World of Genetics....