ANIMSCI 2200.01 Study Guide - Final Guide: Environmental Factor, Social Environment, Genetic Drift
4 Oct 2018
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Document Summary
The development of modern animals occurred over 3 stages: evolution, domestication, production. Evolution: darwin recognized a natural ability for organisms to vary, animals can be selected for whereby the morphology of animals is changed and new variations in animal form and function are established, cd. Nat selection and gen drift act on existing variants in genetics that are caused by mutation and migration: only evolutionary mechanism that has direct adaptive consequences, ca(cid:374)"t operate u(cid:374)less there is ge(cid:374)eti(cid:272) (cid:448)ariatio(cid:374) Individuals must be different (green and red beetles) Adaptation: modifications that are maintained through natural selection. Domestication: process that striking variation within a species arise, environment and genetics contribute to domestication. Evolution did not stop with domestication: early events of domestication were an evolutionary process, natural selection favored genetic modifications that allowed animals to persist and thrive in human environments, ex. All domesticated animals share similarities in the variations that occur with domestication regardless of species.
