Whales have what seem like remnants of a pelvis and femur, as shown here.
An x-ray image...
Whales have what seem like remnants of a pelvis and femur, as shown here.
An x-ray image of a whale tail. The pelvis and femur bones are shown.
What are these structures an example of?
transitional structures
analogous structures
vestigial structures
adapted structures
Answers: 3
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