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Types of Natural Selection

Types of Natural Selection

Assessment

Flashcard

Biology

9th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is Natural Selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

2.

FLASHCARD QUESTION

Front

What is Stabilizing Selection?

Back

Stabilizing selection is a type of natural selection that favors average individuals in a population, reducing variation and maintaining the status quo.

3.

FLASHCARD QUESTION

Front

What is Directional Selection?

Back

Directional selection is a type of natural selection that favors one extreme phenotype over the other, leading to a shift in the population's traits.

4.

FLASHCARD QUESTION

Front

What is Disruptive (or Diversifying) Selection?

Back

Disruptive selection is a type of natural selection that favors extreme phenotypes at both ends of the spectrum, leading to increased variation.

5.

FLASHCARD QUESTION

Front

Example of Stabilizing Selection: Human Birth Weight

Back

Human birth weight tends to be around an optimal range, where both very small and very large babies face health risks.

6.

FLASHCARD QUESTION

Front

Example of Directional Selection: Antibiotic Resistance

Back

In a population of bacteria, those with mutations that confer resistance to antibiotics survive and reproduce, leading to a population dominated by resistant strains.

7.

FLASHCARD QUESTION

Front

Example of Disruptive Selection: African Seed Cracker Birds

Back

In a population of African seed cracker birds, birds with very large or very small beaks are favored, while those with intermediate beak sizes are less successful.

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