Darwin's observations & inferences

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Campbell Ch 22

Observation #1

Members of a population often vary greatly in their traits

Observation #2

Traits are inherited from parents to offspring

Observation #3

All species can produce more offspring than the enviro can support

Observation #4

Due to lack of resources, many of these offspring don't survive

Inference #1

Individuals whose inherited traits
give them a higher probability of surviving n reproducing in a given enviro tend to leave more offspring

Inference #2

un= ability of individuals 2 survive n reprod -> accumulation of favorable traits in the population over gens

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