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Psy 235 exam 1 Questions and Answers 100% Pass Define Evolution: - ANSWER --Evolution refers to a change in a species that occurs over time, and specifically a change in gene frequencies What are the three premises of Natural selection? - ANSWER -1. Over-reproduction within a species: not all ...

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  • December 17, 2024
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Psy 235 exam 1 Questions and Answers
100% Pass

Define Evolution: - ANSWER ✔✔--Evolution refers to a change in a species that occurs over time, and

specifically a change in gene frequencies


What are the three premises of Natural selection? - ANSWER ✔✔-1. Over-reproduction within a species:

not all survive and some over reproduce.




2. Variation exists within a species, and some variants are "more fit" than others: variation on any

phenotype or genotype; variation may make some species more fit to their environment, which allows

them a slightly greater chance in reproduction and survival.




3. Individuals who are more fit reproduce more, and if the variation is genetic, it will be transmitted to

the offspring, and this will be more widespread in the population.




-Ex: faster reaction to danger, those genes will be passed on and survive more


What are the two keys to natural selection? - ANSWER ✔✔-1. Reproductive success: are you passing on

your genetic material and are those offspring surviving? You can't just reproduce, they have to survive

ex: having 3 babies and all surviving is better than having 24 babies and only 3 survive because of limited

resources




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2. Differential Fertility: some individuals are reproducing more than others (differential gene

reproduction)


Define sexual selection: - ANSWER ✔✔--based on competition within the species; fit with the pressures

from other members of your species, ex: female wanting a male who has high health, that male is

overcoming a challenge in their species


Define inclusive fitness: - ANSWER ✔✔--need to compute an organism's direct reproductive fitness

(passing on your own genes to own offspring) and an organism's indirect reproductive fitness (ex: giving

money to niece and not your own child will decrease own reproduction success; niece has some of your

genes, but your children have more).




-indirect reproductive fitness includes copies of one's traits in other related individuals that are not your

direct offspring (ex: helping nieces a little less than helping own children)


List and describe each step in moving from evolution by natural selection to evolutionary psychology -

ANSWER ✔✔--Humans evolved, like every other species. -Then we move on to the brain....


What is the function of the brain? How does the brain fulfill this function? - ANSWER ✔✔--The brain is

an organ in the body.




-Like all organs, the brain evolved to serve a function which is.....




-The brain's function is to regulate the body and generate behavior.




Created by ©EmilyCharlene 2025. All rights reserved.

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