Evolution & Natural Selection

Front

What is Evolution?

Back

The change in traits over time in a population.

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NGSS.MS-LS4-2

NGSS.MS-LS4-4

Front

What are Homologous Structures?

Back

Body parts of organisms that are the same in structure and position but different in function and shared by a common ancestor.

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NGSS.MS-LS4-2

Front

What causes different beak types in Galapagos finches?

Back

Different food types on each island.

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NGSS.MS-LS2-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Front

What happens to traits that help organisms survive over time?

Back

That trait becomes MORE COMMON in the population.

Tags

NGSS.MS-LS4-4

Front

What is required for Evolution to occur?

Back

Genetic Variation, Selective Pressure, and Inheritance.

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Front

What are Analogous Structures?

Back

Body parts that have similar functions but different structures and do not share a common ancestor.

Front

What is Natural Selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Tags

NGSS.MS-LS4-4

Front

What is Genetic Variation?

Back

Differences in DNA among individuals in a population.

Tags

NGSS.MS-LS4-4

Front

What is a Vestigial Structure?

Back

A body part that has lost its original function through evolution.

Tags

NGSS.MS-LS4-2

Front

What is Selective Pressure?

Back

Environmental factors that favor certain traits over others in a population.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4