Evidence of Evolution

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What is the relationship between DNA sequence similarity and evolutionary relatedness?

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Two organisms that are closely related would have very similar DNA sequences.

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NGSS.HS-LS3-1

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What are homologous structures?

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Homologous structures are anatomical features in different species that share a common ancestry, indicating evolutionary relationships.

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NGSS.MS-LS4-2

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What does the presence of a pouch in both opossums and kangaroos suggest about their evolutionary history?

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It suggests that they are descended from a common ancestor.

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NGSS.MS-LS4-2

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According to Darwin, what happens to organisms with traits best suited to their environment?

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They will increase in number.

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NGSS.MS-LS4-4

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How can scientists determine the evolutionary relationships between different species using proteins?

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By comparing the amino acid sequences of proteins found in different species, scientists can infer which species are more closely related.

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NGSS.MS-LS3-1

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What is the significance of studying DNA sequences in evolutionary biology?

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Studying DNA sequences helps scientists understand the genetic similarities and differences between species, providing insights into their evolutionary history.

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NGSS.HS-LS4-1

NGSS.HS-LS4-2

NGSS.HS-LS4-4

Front

Define natural selection in the context of evolution.

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Natural selection is the process by which organisms with traits better suited to their environment tend to survive and reproduce more successfully than others.

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NGSS.MS-LS4-4

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What is a common ancestor?

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A common ancestor is an ancestral species from which two or more different species have evolved.

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NGSS.MS-LS4-2

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What evidence supports the theory of evolution?

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Evidence includes fossil records, comparative anatomy, molecular biology, and biogeography.

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

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What are vestigial structures?

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Vestigial structures are anatomical features that have lost their original function through evolution.

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NGSS.MS-LS4-2