
Natural Selection and Evolution Concepts
Interactive Video
•
Biology, Science, Other
•
9th - 12th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a cause of evolution discussed in the lecture?
Natural selection
Gene flow
Genetic drift
Artificial selection
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the context of natural selection, what does evolutionary fitness refer to?
The ability to find food
The ability to migrate to new areas
The ability to adapt to the environment and reproduce
The ability to survive without reproducing
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is represented on the x-axis of the graph used in the lecture?
Evolutionary fitness
Phenotypes
Types of natural selection
Frequency of individuals
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In directional selection, what happens to the population graph?
It shifts to favor one extreme phenotype
It shifts to favor intermediate phenotypes
It splits into two peaks
It remains unchanged
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of natural selection is illustrated when a population graph shows a bell curve shifting to one side?
Disruptive selection
Directional selection
Balancing selection
Stabilizing selection
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of natural selection favors both extreme phenotypes?
Balancing selection
Directional selection
Disruptive selection
Stabilizing selection
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of disruptive selection on a population's phenotype distribution?
A single peak at the intermediate phenotype
Two peaks at the extreme phenotypes
A flat distribution
A single peak at one extreme phenotype
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