Biological Evidence and the Fossil Record — Unit test Answers

Consider the two male oryx that are shown below.Which of Charles Darwin’s main points is depicted in the image?

Which type of selection leads to increased phenotypic and genetic variation?

Mr. Morales is teaching a lesson on classification. He says that spiders are classified as a different group than insects because they have eight legs instead of six legs. He explains that spiders evolved first. Mr. Morales also says that having eight legs is the derived trait that separates the two groups. Antonio thinks Mr. Morales is wrong. Which piece of information is Antonio considering?

Consider the generalized cladogram of fish.A fossilized fish is found that has jaws but no true bones. Where does this fossil belong on the cladogram?

Marsupials, such as kangaroos, koalas, and wombats, are mammals that care for their newborn young in a pouch. All marsupials that are found in Australia are thought to have evolved from a single species that migrated to the island and then adapted to the various niches. What does this example illustrate?