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9A

Test review

Scientists can determine relatedness among organisms by comparing partial amino acid sequences. The table (below) shows four partial amino acid sequences from four different organisms.

Which TWO organisms are most closely related?

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exit ticket

"Basilosaurus isis" is a relative to modern-day whales that went extinct approximately 34 million years ago. This organism grew up to 50 feet in length and had the remnents (remains) of a pelvic (hip) bone and hind (rear) leg bones, as shown in the image below.

Structures that no longer serve the purpose that they were meant to serve are known as...

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Exit ticket / QUIZ REVIEW

The image below shows part of the humerus bone (arm bone) in different genera of primates.

Which statement is best supported by the observable structures of the different humerus bones?

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10A - Practice / quiz review

The diagram shows light- and dark-colored beetles that live on a tree.

(1) Which population has the higher fitness, and (2) what will happen to that population over time?

Look at the image carefully. Then enter your answer and explanation in the box provided.