When an organism has many offspring, some of the offspring are different, these differences are called ________

Marine iguanas have flattened tails and feed on seaweed + algae in the water. Other species of iguanas that live inland on South America have rounded tails. Which of the following best explains the difference in tail shape?

If a species is unable to adapt or evolve to its changing environment, what is likely to happen to that species?

Brown and green bugs are seen in a green leafy environment. You conclude that green beetles are better camouflaged than yellow ones from predators. How do you predict beetle color in this population will evolve over time?

You are on a safari in Serengeti National Park in Tanzania. One day, you see a zebra nursing its offspring. The person next to you asks why zebras do that. What is the best explanation for why zebras nurse their young?

How is natural selection in the evolution of long necks giraffes best explained?

Which of the following BEST describes a gene?

Green beetles are well camouflaged. Suppose a mutation occurs in a beetle’s gene. This mutation affects a protein, which in turn results in the beetle having red spots on its back. Which of the following statements BEST describes this mutation?

A population of bugs initially consists of dark and light colored bugs. After several generations, the bug population is almost all dark colored bugs because the light colored bugs are easier for predators to find and eat. This is an example of _____

Whales have no legs, yet they still have pelvic bones. These body parts were probably once functional in an ancestor. We call these non-functioning body parts __________

When two groups of the same species are separated for a long period of time by mountains, water, or other natural feature, new variations can start to appear in the different groups. This is called _________.

The model that described evolution as a slow, ongoing process by which one species changes into a new species is called ___________.

You have learned about Kettlewell’s experiments with peppered moths. Kettlewell marked and released dark and light moths in two different environments and then tried to recapture them. What were his results?

A population of rabbits comes in two different colors - Grey Brown. You observe that 15% of the grey rabbits are eaten by predators, while 23% of brown rabbits are eaten by predators. How do you predict this rabbit population will evolve?

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