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Biology 12 Online
OpenStudy (anonymous):

According to Darwin's model of evolution, evolution can only occur if there is some variation present among the individual members of a population. Which statement BEST describes the source of this variation among members of a species? A) Individuals will vary depending on geography and climate. B) Variation exists because not all genes will be expressed. C) Variation among individuals may arise as a result of mutations in the genetic code. D) Variation exists because different individuals will have different access to food and other resources.

OpenStudy (shreehari499):

What do u think? @imaniwalker ?

OpenStudy (anonymous):

I think it is C

OpenStudy (shreehari499):

Bravo! Its correct!

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