Unit 8 - Change Over Time Study Guide

What is the definition of Evolution?

• Change over time

• Remains of an organism

• Similarities in DNA

• Natural selection

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The theory of Evolution explains how living things descended from earlier organisms. True or False?

• True

• False

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Fossils are preserved remains of an organism that lived in the past. What do they show?

• Modern organisms

• Ancient organisms

• Evolution

• DNA structure

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What do similarities in DNA and protein structure indicate?

• Different ancestors

• Common ancestors

• No relation

• Evolution stopped.

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Many organisms have similar body plans in early development, showing common evolutionary history. This is an example of ________.

• Fossil record

• Homologous structures

• Embryology

• Early development

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_______________ structures are similar structures that related species have inherited from a common ancestor.

• Homologous

• Vestigial

• Analogous

• Heterozygous

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What do similarities in early development suggest?

• Different evolutionary paths

• Common development pattern

• No relation

• Unique species

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What did Darwin observe in his travels?

• No diversity

• Limited diversity

• Much diversity

• Only one species.

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Fill in the blank: Darwin saw fossils of animals that died out long ago, which resembled the bones of the organisms he was ________.

• Eating

• Observing

• Ignoring

• Creating

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On the Galapagos Islands, Darwin observed organisms that had differences from those in South America. What did this suggest?

• No evolution

• Similar environments

• Evolutionary changes

• Identical species

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