What is a structure that is similar across species?
Evidence of Evolution

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•
Science
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Homologous structures are anatomical features in different species that share a common ancestry, indicating evolutionary relationships.
2.
FLASHCARD QUESTION
Front
What inference might paleontologists make if modern organisms have a lot of homologous structures?
Back
Paleontologists might infer that the organisms have a common ancestor.
3.
FLASHCARD QUESTION
Front
What do scientists compare to support the theory that all species share a common ancestor?
Back
Scientists compare organisms' DNA.
4.
FLASHCARD QUESTION
Front
What term describes the changes of species over time?
Back
Evolution is the process through which species change over time through various mechanisms.
5.
FLASHCARD QUESTION
Front
How do fossils provide evidence that evolution has happened on Earth?
Back
Fossils show how life forms present today are different than those from the past, indicating evolutionary changes.
6.
FLASHCARD QUESTION
Front
What are vestigial structures?
Back
Vestigial structures are remnants of organs or structures that had a function in an early ancestor but are no longer functional in the current organism.
7.
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.
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