BIOL 3200 Lecture Notes - Lecture 10: Gradualism, Natural Selection
Document Summary
On november 24, 1859, darwin successfully published on the origin of species by means of natural selection, or the preservation of favoured races in the. Darwin argued that all true classification is ancestral. All species, genera, and families of organisms descended, each within its own class or group, from common parents. All have been modified throughout the course of descent over years and years. All plants and animals must have descended from one common prototype: divergence: Darwin argued that a new variety within a species allows more use of different resources within its environment. This (cid:449)ould allo(cid:449) for spe(cid:272)ializatio(cid:374) (cid:449)ithi(cid:374) a spe(cid:272)ies (cid:862)di(cid:448)isio(cid:374) of the la(cid:271)our(cid:863) A location can uphold more life if it is occupied by diverse organisms splitting the different resources they need. Divergence into a specialized niche would be of adaptive advantage b/c organisms would avoid competition for resources this way. So, divergence in specialization of new niches would create a branching lineage, not linear.
