BIOL208 Lecture Notes - Lecture 5: Natural Selection, Allele Frequency, Rainbow Trout

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Scientific method and adaptation: question, how do individuals within a species become adapted, hypotheses, selection, the environment selects those with advantageous traits, or selects against those without leading to gradual/rapid change, created. Individuals/species change over time: created, pe(cid:272)ies do(cid:374)(cid:859)t (cid:272)ha(cid:374)ge. The theory of natural selection by charles darwin: more offspring are produced each generation than can be supported by the environment, there is variation in physical, physiological, and behavioural traits among individuals in a population. Some of this variation is passed on to the offspring: some traits will give some individuals an advantage over other members of the population. These individuals will have a higher chance of surviving and reproducing than other members of the population, increasing their fitness. If the conditions exceed the optimum species ranges, the species may have to: ex. hibernate, adapt/acclimate to changing conditions, food storage, cover, or else they will suffer and die.

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