MICRO AND MACROEVOLUTION

Macroevolution is evolution on a scale of separated gene pools. Macroevolutionary studies focus on change that occurs at or above the level of species, in contrast with microevolution, which refers to smaller evolutionary changes (typically described as changes in allele frequencies) within a species or population. Macroevolution and microevolution describe fundamentally identical processes on different time scales.

Speciation, that is the formation of new species from a parental population, is an example of macroevolution. Incipient speciation has been found in the salamander Ensatina. Examples of microevolution include genetic changes in gene pools or changes in the variation within a species. Basically, the term "evolution" simply means change.

Evolution does NOT mean a dog hatches out of a chicken egg nor does evolution mean that an ape gives birth to a human. Such thinking is absurd.

(See incipient speciation in the salamander Ensatina)

 

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