Question

place a check in the correct box to identify the type of structure each statement describes. analagous homologous vestigial scientists believe human arms and whale flippers were inherited from a common ancestor. the tailbone of a human is a structure that serves no real purpose. hawk wings and grasshopper wings allow for sustained flight, but these structures evolved separately. humans can have their appendixes removed with few, if any harmful effects.

Explanation:

1. Human arms and whale flippers are homologous as they have a common - ancestor origin.
2. The human tailbone is a vestigial structure as it has lost its original function.
3. Hawk wings and grasshopper wings are analogous since they evolved separately for the same function (flight).
4. The human appendix is a vestigial structure as it can be removed with little harm, indicating it has little current - day function.

Answer:

1. Homologous
2. Vestigial
3. Analogous
4. Vestigial