Standard 17 Natural Selection

Flashcard
•
Biology
•
9th - 12th Grade
•
Hard
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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 are the three types of natural selection?
Back
1. Stabilizing Selection: Favors average traits. 2. Directional Selection: Favors one extreme trait. 3. Disruptive Selection: Favors both extreme traits.
3.
FLASHCARD QUESTION
Front
What is an adaptation?
Back
An adaptation is a variation that helps a species survive in its environment.
4.
FLASHCARD QUESTION
Front
What is stabilizing selection?
Back
Stabilizing selection is a type of natural selection that favors average traits and reduces variation.
5.
FLASHCARD QUESTION
Front
What is directional selection?
Back
Directional selection is a type of natural selection that favors one extreme phenotype over others.
6.
FLASHCARD QUESTION
Front
What is disruptive selection?
Back
Disruptive selection is a type of natural selection that favors extreme traits at both ends of the spectrum.
7.
FLASHCARD QUESTION
Front
What is a structural adaptation?
Back
A structural adaptation is a physical feature of an organism that enhances its survival, such as a giraffe's long neck.
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