ANTH 1001 Chapter : Anthro Oct 25
Document Summary
Phylogenic species concept: doesn"t rely on reproductive isolation. Intraspecific: variation within a species and can be accounted for age or sex differences. inter-specific: variation between 2 different species and cannot be accounted for by sex and age difference. Speciation: the development of a species clad genesis: one species of organisms that diverges resulting in two decent species; the original goes extinct and the decents share the common ancestor. One species overtime gradually changes. until it no longer resembles it ancestor and possibly become a new species. Punctuated equilibrium: suggest that you have periods of change that occur rapidly and inconsistently; the periods of change that are separated by long periods of stasis ( no change is occurring) Relative dating-methods that will probably place your fossil in a sequence in relation to something else. *stratigraphy: the study of the layering of the earth or the earths surface. Law of superposition -the deeper you go the older it is.
