ENVS 1500 Lecture Notes - Lecture 5: Medium Ground Finch, Special Creation, Adaptive Radiation
27 Nov 2013
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Document Summary
Finches held the secrete of the origin of species of diversity, not for the origin of life. It is a model that helps us understand the spices diversity. Weather is the main driver: 2 species of finches. Focused on medium ground finch, and could identify every piece of food they eat: major biological process they observed. Trying to understanding species co-op. , why populations are variable, how species are formed. What they found was natural selection was operating under stressful conditions. Galapagos islands are isolated from other land masses. Darwin never kept track of which finch"s came from which islands. Finches diversified form one pair that arrives form south america. Adaptive radiation is the term used to describe the diversification into 13 types: introduction: Evolution by natural selection: all species have arose form a common ancestor from 3. 5 billion years ago. Not a model for how life began model for why we have so many species.
