Homologous and Analogous
What are homologous structures?
Body parts of organisms that are similar in structure and position, but different in function.
What is a vestigial structure?
Body parts that have lost their original function through evolution.
Where did the ancestors of whales once live?
What is embryology?
The science of the development of embryos from fertilization to birth.
Naturally preserved remains, imprints or traces of organisms that lived long ago are called what?
What is an Analogous structure?
Body parts of organisms that perform a similar function but differ in structure.
How are vestigial structures evidence of descent from ancestral species?
A structure with no function in a living species suggests that it descended from an ancestor that used the structure.
What animal is the closest living relative to a whale?
Hippo
What is an embryo?
An unborn or unhatched offspring in the process of development.
What provides evidence that species have changed over time?
fossil record
The wings of a butterfly and the wings of an eagle are an example of:
What purpose did our appendix use to serve?
What drove the ancestors of whales to the water. 1 correct answer
food
Generally, the older the fossil, the shallower or deeper it is in Earth
The leg of a cat and the wing of a bird are an example of:
What are examples of vestigial structures in humans?
What is a piece of evidence that shows whales and sharks are not related?
Whales have to go the the surface to breathe. Whales have flukes instead of fins.
All humans have gills as embryos. What do these gills develop into before we are born?
This type of fossil is created when an organism dies and its remains leave a hollow imprint in the earth.
Mold fossil
Do homologous or analogous structures give us more evidence about two species sharing a common ancestor?
homologous
What is one vestigial structure in a whale?
thumb
Name one of the organisms the modern-day whale evolved from.
Mesonychids
pakicetus
ambulocetus
rodhocetus
deurodon
insects trapped in amber and Wolly Mamoth's frozen in ice are examples of what types of fossils
body fossils