Whales have what seem like remnants of a pelvis and femur, as shown here. An x-ray image of a whale tail. The

Question

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

GPT-5 mini · Answer

vestigial structures

These small pelvis and femur bones are vestigial — reduced remnants of structures that were functional in whale ancestors (terrestrial mammals) but are no longer used for locomotion.

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

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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

All Answers 1

Submit Your Answer

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