Natural Selection and Evolution
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
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 that are better adapted to their environment tend to survive and produce more offspring.
2.
FLASHCARD QUESTION
Front
Why are advantageous traits more likely to be passed onto offspring?
Back
Because they are more likely to survive and reproduce.
3.
FLASHCARD QUESTION
Front
What is an adaptation?
Back
An adaptation is a trait that helps an organism survive in its environment.
4.
FLASHCARD QUESTION
Front
What are vestigial structures?
Back
Vestigial structures are body parts that have lost their original function through evolution, indicating a common ancestry.
5.
FLASHCARD QUESTION
Front
What is a mutation?
Back
A mutation is a change in the DNA sequence of an organism.
6.
FLASHCARD QUESTION
Front
How do mutations contribute to evolution?
Back
Mutations introduce genetic variation, which can lead to new traits that may be advantageous for survival.
7.
FLASHCARD QUESTION
Front
What is the difference between homologous and analogous structures?
Back
Homologous structures are similar due to shared ancestry, while analogous structures are similar due to convergent evolution, not common ancestry.
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