Gradualism

What happens to new traits that HELP organisms survive over time?

• Nothing

• That trait becomes MORE COMMON in the population

• That trait becomes LESS COMMON in a population

• Equally common

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NGSS.MS-LS4-4

Theory that evolution occurs slowly but steadily

• natural selection

• gradualism

• relative dating

• branching tree

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NGSS.MS-LS4-1

Gradual change of a species over time

• Heredity

• Evolution

• Natural Selection

• Scientific Theory

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

The theory that evolution occurs slowly but steadily.

• Gradualism

• Punctuated equilibria

• Half Life

• Adaptation

Which of the following best describes the concept of gradualism in evolutionary biology?

• Evolution occurs in small, incremental steps over long periods of time.

• Evolution occurs in rapid bursts followed by long periods of stability.

• Species remain unchanged over time.

• Evolution is driven by sudden environmental changes.

Gradualism suggests that evolutionary changes are:

• Sudden and unpredictable.

• Slow and steady.

• Non-existent.

• Rapid and frequent.

In the context of gradualism, which of the following is an example of a gradual evolutionary change?

• The sudden appearance of a new species.

• The slow development of longer necks in giraffes over generations.

• The extinction of dinosaurs.

• The rapid spread of antibiotic resistance.

Tags

NGSS.MS-LS4-1

Which scientific principle is most closely associated with gradualism?

• Natural selection.

• Genetic drift.

• Catastrophism.

• Punctuated equilibrium.

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

How does gradualism explain the fossil record?

• It suggests that the fossil record is incomplete due to rapid changes.

• It indicates that fossils show a slow and steady progression of forms.

• It argues that fossils appear suddenly without transitional forms.

• It claims that fossils are not reliable evidence of evolution.

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NGSS.MS-LS4-1

Which of the following scenarios would best illustrate gradualism in action?

• A volcanic eruption causing mass extinction.

• A species of bird developing slightly longer beaks over thousands of years.

• A meteor impact leading to the sudden disappearance of species.

• A sudden mutation causing a new trait to appear in a population.

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NGSS.HS-LS4-2

NGSS.HS-LS4-4