Evidence for Evolution Quiz #1

1. The picture for question 1 is evidence for evolution because it shows that species are always changing. The species evolved from a wolf/bear like creature to a whale life creature because the species needed to adapt to its changing environment. Many factors play into why the species needed to adapt. Either there was an abundance of food in the water, or the animals were trying to escape a predator. Through these factors, the species changes over time, such as new bone structures, and the species transforms into a whole new one.   2. Marsupials evolved from North America. Then they migrated to South America and then to Australia. The answer is E.  3. The Dragon fly, the bird, and bats are all animals from different lineages. But, they all have analogous structures that have similar functions. This is called convergent evolution. They have all evolved the capability of flight independently. They have all "converged" this trait. Their bone structures are different but it has similar uses. 

4. The Common Ancestry Lab shows evidence for evolution through the DNA of the common ancestor, gorillas  chimpanzees, and humans. They all have similarities, or matches, and differences. This shows us that gorillas, chimps, and humans are related. The gorilla is closely related to the chimp, and the human is closely related to the human. 

5. Homology is when animals have similar bones structures but different uses for them. For example from inner fish we can lear that humans, dogs, birds, and whales have similar bone structure in the are but we all use it for different reasons.