Evolution Introduction

The similarities of the bones in the diagram provide evidence that---

• The organisms shown lived in the same natural envionrment

• The organisms shown may have developed from a common ancestor

• The organisms shown have the same genetic diseases

• All vertebrate species have identical forelimbs

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Which scientist visited the Galapagos Islands and came up with the theory of natural selection?

• Theodor Schwann

• Gregor Mendel

• Charles Darwin

• Rudolf Virchow

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How do fossils show the comparison from ancient to modern species?

• Ancient organisms are similar to moderns; yet differ in several ways

• Ancient organisms were a different size compared to modern; otherwise identical

• Ancient and modern species are the exact same

• Ancient and modern species have nothing in common

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measure of an organisms's ability to survive and produce offspring relative to other members of a population 

• Natural Selection

• Adaptation

• Fitness

• Variation

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Vestigial structures

• structures that perform a similar function but are not similar in origin

• remnants of once-important structures that have slowly lost all or most of their function

• features found in different organisms that share structural similarities but may have very different functions

• preserved remains of an organism

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NGSS.MS-LS4-2

The picture shows a/an ___________

• homologous structure

• vestigial structure

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In stage one (top row) of these embryos, most of the embryos________

• look very similar.

• have very different features.

• show different stages of development.

• have only a tail if they are non-human.

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Two organisms that are closely related would have

• very similar DNA sequence

• exactly the same DNA sequences

• no proteins in common

• completely different DNA sequence

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This is a process in which organisms gradually change over time.

• Environment

• Competition

• Evolution

• Fossils

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This is a process by which organisms inherited advantageous traits that tend to reproduce more successfully than the other organisms do. 

• Artificial selection

• Natural selection

• Populations

• Environment

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