What is an analogous structure?
Evidence of Evolution

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Science
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Structures that perform a similar function but are not similar in origin.
2.
FLASHCARD QUESTION
Front
What is a homologous structure?
Back
Features found in different organisms that share structural similarities but may have very different functions.
3.
FLASHCARD QUESTION
Front
What are vestigial structures?
Back
Remnants of once-important structures that have slowly lost all or most of their function.
4.
FLASHCARD QUESTION
Front
What is the significance of fossils in understanding evolution?
Back
Fossils show how life forms present today are different than those from the past.
5.
FLASHCARD QUESTION
Front
What does it mean if a structure is described as vestigial?
Back
It means that the structure was once functional in an ancestor but has lost its primary function over time.
6.
FLASHCARD QUESTION
Front
What is the difference between homologous and analogous structures?
Back
Homologous structures share a common ancestry but may serve different functions, while analogous structures serve similar functions but do not share a common ancestry.
7.
FLASHCARD QUESTION
Front
How do sedimentary rock layers provide evidence for evolution?
Back
Different sedimentary rock layers show how the environment has changed over time, indicating the evolution of life forms.
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