evolution test 22-23

This chart compares the base sequences of homologous segments of DNA from three primates. Based on this information, how many differences in the resulting amino acid sequences would you expect to find between humans and chimpanzees?

• 2

• 4

• 6

• 88

The table indicates the number of amino-acids sequence of the hemoglobin from selected organisms when compared to human hemoglobin. On the basis of this information, which organisms would be classified as most closely related to humans?

• Lamprey

• Frog

• Dog

• Macaque

Bacteria adapt more quickly than elephants to environmental changes. Which best explains this difference?

• Bacteria reproduce more rapidly.

• Individual bacteria grow more steadily.

• Bacteria populations are more isolated.

• Individual bacteria have more genes.

Charles Darwin proposed his theory of evolution based on observations of nature. Which observation that contributed to his theory is illustrated by this population of beetles?

• Environmental resources are limited.

• Populations remain stable over time.

• Individuals within a population may vary widely.

• Species produce more offspring than can survive.

The 14 different species of finches in the Galapagos Islands originated from a single ancestral species. What is it about these islands that is responsible for the diversity of finch species?

• The islands are made of volcanic peaks.

• Each island has different food sources.

• Each island has a different climate.

• The islands are clustered near each other.

A group of ponies lives in the Chincoteague National Wildlife Refuge in Virginia. The development of longer legs over time would be selected for if-

• it increased the survival rate of the long-legged ponies

• it decreased the reproduction of the long-legged ponies

• it prohibited the long-legged ponies from using available food sources

• it made the long-legged ponies run more slowly

Why is the mouse population changing over time?

• The light mice can reproduce more successfully than the dark mice

• The hawks eat more dark mice than light mice because the dark mice taste better

• The hawks eat more light mice than dark mice because they can see the light mice more easily

• The hawks eat more dark mice than light mice because they can see the dark mice more easily

If an organism can't adapt fast enough, this might happen.

• hibernate

• stay the same

• live longer

• become extinct

Which of the following is evidence to support the idea that two different species might have a common ancestor?

• The fossils were discovered in the same location.

• Many of their genes are the same.

• Their method of respiration are alike.

• They use the same method of locomotion.

Biologists surveyed four islands in a chain near a continent. They identified species found on the mainland and those species that were unique to each island. Based on these results, which island is probably farthest from the mainland?

• 1

• 2

• 3

• 4