Question

biology final
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unit 7 - ls4 - 1
what theory accounts for why traits can be modified over time? *
natural selection
evolution
artificial selection
fossil theory
what are two main components of natural selection? *
mimicry and artificial selection
vestigial structures and camouflage
variation and inheritance

Explanation:

1. Evolution is the over - arching theory that accounts for how traits can be modified over time through mechanisms like natural selection, genetic drift, etc. Natural selection is a part of the evolutionary process, artificial selection is human - driven trait modification, and fossil theory mainly deals with the record of past life.
2. The two main components of natural selection are variation (differences in traits among individuals in a population) and inheritance (the ability of traits to be passed from parents to offspring).

Answer:

1. B. evolution
2. C. variation and inheritance