What does the presence of tiny, non-functional leg bones in modern whales suggest?
Comparative Anatomy Practice

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Whales evolved from ancestors with legs.
2.
FLASHCARD QUESTION
Front
What are pelvic bones in whales an example of?
Back
Vestigial structures.
3.
FLASHCARD QUESTION
Front
Which structures are considered homologous?
Back
Dog paw and human hand.
4.
FLASHCARD QUESTION
Front
What does the similarity between a bat wing, a human arm, and a whale flipper suggest?
Back
They have a common evolutionary ancestor.
5.
FLASHCARD QUESTION
Front
Why is the appendix in humans considered vestigial?
Back
It no longer has a significant function but had one in ancestors.
6.
FLASHCARD QUESTION
Front
What are analogous structures?
Back
Structures that have similar functions but different evolutionary origins.
7.
FLASHCARD QUESTION
Front
What is the definition of homologous structures?
Back
Structures that share a common ancestry but may have different functions.
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