Natural Selection and Allele Frequency

Natural Selection and Allele Frequency

Assessment

Interactive Video

Biology, Science

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial discusses the effects of mutations on organisms, highlighting that mutations can be negative, neutral, or beneficial. It explains natural selection as a process where advantageous traits increase an organism's survival and reproduction chances. The video also covers how environmental changes can alter which traits are favored, emphasizing the unpredictability of natural selection. It further explores the role of chance in evolution, using a card game analogy to illustrate how less advantageous traits can still prevail. Finally, the tutorial describes how researchers use statistical methods to differentiate between changes due to chance and those driven by natural selection.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary effect of a beneficial mutation on an organism?

It decreases the organism's survival chances.

It has no effect on the organism.

It helps the organism adapt to its environment.

It always leads to extinction.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the process called when beneficial traits are passed on to the next generation?

Mutation

Artificial selection

Natural selection

Genetic drift

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can environmental changes affect the traits favored by natural selection?

All traits become equally advantageous.

Environmental changes have no impact on natural selection.

Traits that were once advantageous may become disadvantageous.

Traits remain constant regardless of environmental changes.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is natural selection considered unpredictable?

Because it is influenced by random environmental changes.

Because it never changes.

Because it is controlled by humans.

Because it always favors the same traits.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role does chance play in the process of natural selection?

Chance has no role in natural selection.

Chance only affects non-adaptive traits.

Chance determines which traits are always favored.

Chance can influence which traits become prevalent.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the concept of a card game used to explain natural selection?

It illustrates how chance can affect outcomes.

It shows that the best traits always win.

It demonstrates that all traits are equal.

It proves that natural selection is predictable.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one method researchers use to study natural selection?

By eliminating all chance factors.

By observing changes in allele frequencies over time.

By predicting future environmental changes.

By creating new species in a lab.

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