Coyne CH1

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Department
Biology
Course
BIO120H1
Professor
Jean Jiang Nash
Semester
Winter

Description
Why Evolution Is True Chapter 1: What Is Evolution Life on earth evolved gradually beginning with one primitive species that then branched out over time, throwing off many new and diverse species. The mechanism for most but not all of evolutionary change is natural selection. 6 parts to this: 1) Evolution species undergoes genetic change over time. Differences based on change in DNA. 2) Gradualism takes many generations to make a substantial change 3) Common Ancestry recent ancestorsimilar trait, which creates natural classification this is strong proof for evolution. If we were created = no natural agreed upon classification 4) Speciation (splitting) ---starts with 2 populations of the same species that cannot interbreedexponential rise on the number of possible future species 5) Natural Selection requires individuals of species to vary genetically in ability to survive and repr
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