What is a cladogram?
Cladogram

Flashcard
•
Biology
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A cladogram is a diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.
2.
FLASHCARD QUESTION
Front
What does a branch point in a cladogram represent?
Back
A branch point, or node, in a cladogram represents a common ancestor shared by the species that diverge from that point.
3.
FLASHCARD QUESTION
Front
How can you determine which organisms are most closely related on a cladogram?
Back
Organisms that share a more recent common ancestor (closer branch points) are considered more closely related.
4.
FLASHCARD QUESTION
Front
What characteristic do all organisms to the right of a specific point on a cladogram share?
Back
They share a common derived characteristic that is present in all descendants from that point onward.
5.
FLASHCARD QUESTION
Front
What is a common characteristic of sharks and ray-finned fish according to a cladogram?
Back
Both sharks and ray-finned fish share the characteristic of having jaws.
6.
FLASHCARD QUESTION
Front
Which organisms are least related according to a cladogram?
Back
Organisms that are farthest apart on the cladogram are least related.
7.
FLASHCARD QUESTION
Front
What does it mean for a trait to be a shared characteristic?
Back
A shared characteristic is a trait that has evolved in a common ancestor and is present in all its descendants.
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