BILD 3 Study Guide - Midterm Guide: Radiometric Dating, Species Problem, Genetic Variation
20 Apr 2016
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Origin of the species charles darwin: all organisms evolved from common ancestor descent with modification, mechanism evolution by natural selection, changed world view creation vs evolution. Darwin witnessed tropical diversity in brazil, found bones of mammals, discovered the bones of extinct giant mammals. Galapagos islands found mockingbirds all different in appearance, different from mainland birds. Studied barnacles, bred pigeons, studied dispersal and colonization processes. Plants could disperse on their own lfred russell wallace collected exotic animals in amazon, endured harsh conditions. Described evolution by natural selection to darwin, and darwin wrote origin of species. Decent with modification accepted: evidence included fossils any trace of an organism that lived in the past, used for sequences timing. Succession fossils from one region to extant organisms from that same region. Transitional forms organisms with characteristics of both ancestral and modern forms: also included homology similarity due to inheritance of traits from common ancestor.
