Patterns of Evolution and Structures

These structures are built the same, but do different jobs.

Structures that do the same job, but are built differently are called

Structures that no longer serve a purpose in a living thing, like hip bones in whales, are called

What is shown ?

Which of the following is not considered a VESTIGIAL structures in humans.

Which of the folllowing is an exammple of a vestigial structure for the ostrich?

Remains of ancient organisms are called

The legs of a cow, legs of a horse, and flippers of a whale are all built the same and show common ancestry. These are examples of what structures?

Sharks, penguins, and dolphins all have flippers used for swimming, even though they are unrelated. These structures are

All dogs have the common ancestor the wolf. This is an example of -