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Inter-teach 2 - Moore Chpt 7 & Harris Chpt 1

Inter-teach 2 - Moore Chpt 7 & Harris Chpt 1 - Whitney...

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Whitney Blake 1/25/2010 Inter-teach 2: Moore (2008) Chapter 7 & Harris’ (1972) Chapter on Cow Worship 1. The three important processes in all selectionist accounts are variation, selection (interaction) and retention. With respect to the evolution of species, briefly describe the things that vary, how they are selected, and how they are retained. (maximum of 10 pts) All organisms are in a life-long struggle to survive. Often the struggle is with other organisms that are similar, and the struggle takes many forms. One is avoiding predators. They have to run faster than other organisms, including members of their own species, that might be targeted by the predator. A second is gaining preferential access to life-sustaining resources. Organisms have an increased chance of survival if they can get more food and water than other organisms. A third is gaining preferential reproductive access to mates. Organisms that reproduce are the ones who have their genes transmitted to, and expressed in the next generation. 2. With respect to phylogenic behavior , briefly describe the things that vary, how they are selected, and how they are retained. (6 pts) Phylogenic behavior deals with innate behavior and things that are not learned, but natural instinct. There is less variation in a species because all second- generation offspring come from mother/father that has certain heightened DNA trait. These traits are then passed to the offspring making it more fit to survive.
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