1. Explain the following picture in terms evidence for evolution.
This picture shows that Evolution occurred. The Mesonychid, over the time span of millions of years, gradually changed from a land-dweller to an ocean-dweller.
2. Which of the following continents did marsupials begin from?
a. Europe
b. Africa
c. Australia
d. South America
e. North America
3. Comparing a dragonfly, bird, bats - explain the type of evolution that these organisms show.
When comparing these three organisms, we see that there are many similarities, but their underlying structures are completely different. This is called convergent evolution. These organisms share the analogous structure of wings.
4. Explain how the Common Descent Lab shows DNA evidence and ancestry as
evidence for evolution. Include examples of Primates.
In the Common Descent Lab, we took four strands of DNA, a gorilla, a chimpanzee, a human, and a common ancestor, and look for similarities between them. We used similarities in the DNA to find common ancestry among these four organisms. One thing that we found was that, chimpanzees are more closely related to humans than gorillas are.
5. Explain homology using some examples from your readings.
Homology is an ancestral relationship between two or more organisms. We learned this after reading Your Inner Fish, where the author spoke of commonalities of arms between many different organisms, and then introduced the blob.
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