What are homologous structures?
Semester 1 Study Guide

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Structures in different species that are similar due to shared ancestry, such as the human arm and bird wing.
2.
FLASHCARD QUESTION
Front
What is speciation?
Back
The process by which new species are formed.
3.
FLASHCARD QUESTION
Front
What occurs during lithification?
Back
The process where loose sediments are compacted and cemented to form rock.
4.
FLASHCARD QUESTION
Front
What is artificial selection?
Back
The intentional breeding of organisms to produce specific traits, such as dog breeding for certain characteristics.
5.
FLASHCARD QUESTION
Front
What forms at a divergent boundary in the ocean?
Back
Mid-ocean ridges, where tectonic plates move apart.
6.
FLASHCARD QUESTION
Front
What is the difference between homologous and analogous structures?
Back
Homologous structures share a common ancestry, while analogous structures serve similar functions but do not share a common ancestry.
7.
FLASHCARD QUESTION
Front
What is natural selection?
Back
The process where organisms better adapted to their environment tend to survive and produce more offspring.
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