Homologous VS Analogous
Presentation
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Science
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9th - 12th Grade
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Practice Problem
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Easy
+1
Standards-aligned
Hastings High Science
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9 Slides • 5 Questions
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Homologous VS Analogous
Evolution Quiz 1 Intervention
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Take a look at the pictures.
Which species do you think are more closely related?
The prawn and woodlice?
Or dolphins and sharks?
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Open Ended
Which species did you think are more closely related?
Why?
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Sharks and Dolphins are not closely related.
So, why do they look so much alike?
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Poll
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Convergence (Convergent Evolution)
Two species are NOT closely related - but have similar features because of having similar environmental pressures.
We call these traits ANALOGOUS
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Analogous Traits
The shape of these organisms is due to similar environment - NOT a recent common ancestor.
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Multiple Choice
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Fill in the Blanks
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Open Ended
What is the difference between a VESTIGIAL trait and a HOMOLOGOUS trait?
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Some traits are retained by species, but no longer function or serve a purpose for that species. These are called VESTIGIAL traits. Vestigial traits provide evidence that organisms are closely related.
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Homologous VS Analogous
Evolution Quiz 1 Intervention
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