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Collared Lemming

Posljednje ažuriranje about 2 years ago

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Pitanje 1

1.

The brown lemming is another type of lemming that lives in the arctic. Brown lemmings and collared lemmings are closely related species.
Which of the following describes how scientists can best study the differences between these two species?

A. Crossbreed the lemming species and count the differences observed

B. Determine the genome of each lemming species and look for differences

C. Give lemmings from each species different food and observe how they react

D. Compare the types of plants in the habitat of each lemming species and record the differences

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Pitanje 2

2.

Scientists studied genetic variation in collared lemming populations that live in different locations. Scientists found that there was less genetic variation than expected between two of the lemming populations.
Which of the following most likely resulted in less genetic variation between these two populations?

A. The plants that the two populations ate were similar

B. There was interbreeding between the two populations

C. There were frequent genetic mutations in each population

D. The two areas where the population lived were similar in size

Pitanje 3

3.

The fur color of collared lemmings changes to white at a certain time of year. Explain how the change in fur color is an advantage to collared lemmings

Pitanje 4

4.

When temperatures rise above freezing, snow melts which causes changes in the collared lemmings’ habitat.
Describe ways warming temperatures could cause the size of the collared lemming population to decrease.

Pitanje 5

5.

Describe how fur color in the collared lemming population will likely change over time as temperature increases.
Explain using the principle of natural selection (be sure to state the original population, which fur color is best, why it is best, and what the end population will be)