biology fina ch 11

____ is the study of body plans and structures.

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____ is the study of body plans and structures.

According to ____, environmental pressures caused changes in body parts, which were directed by ____ and passed onto offspring.

Lamarck; fluida

Darwin incorporated Malthus' idea that _____ into his theory of evolution.

populations have the capacity

Based on the structural similarity of vertebrate limbs, we can conclude that these structures are examples of ____.

morphological divergence

Darwin's observation of vastly different species living in similar island environments led him to conclude that each population had arisen separately from existing species on these islands, since the geographic isolation prevented migration of species from the mainlands. This scenario is an example of ____.

biogeography

In his voyage around the world in the Beagle, what observation did Darwin make about animals?

the plants and animals on the different islands also differed

Which factor influences radioactive decay?

Time

Hind leg bones in whales are an example of ____ structures.

vestigal structures

The genomes of closely related species are more similar than distantly related species because _____.

the more time since the species diverged, the more neutral DNA mutations will accumulate

biology fina ch 11

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