Exam (elaborations)

BIOL 1001 WEEK 5 EXAM WITH ANSWERS Fall 2022

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Course
BIOL1000 (BIOL1001)

Institution
York University (Ebor )

Which individuals have the greatest fitness in an area where malaria is common? Correct Answer: e. Individuals heterozygous for the normal and sickle cell anemia alleles • Question 9 2 out of 2 points Your friend was diagnosed with strep throat 2 months ago. She was treated wi...

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Uploaded on August 17, 2022
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which individuals have the greatest fitness in an area where malaria is common correct answer e individuals heterozygous for the normal and sickle cell anemia alleles • question 9 2 out o

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BIOL 1001 WEEK 5 EXAM WITH ANSWERS

 Question 1
2 out of 2 points
Which of the following describes natural selection?
Correct d.
Answer: A population of mammals varies in the length of their legs, water levels
rise, and the habitat becomes swampy. The individuals with shorter legs
are better able to swim to food, and the population evolves to become
shorter-legged.

 Question 2
3 out of 3 points
As natural selection acts on a population, the amount of variation in the population
should:

Correct b.
Answer: Decrea
se

 Question 3
3 out of 3 points
Which of the following is not a way in which the theory of evolution has been supported?

Correct e.
Answer: None of the
above.

 Question 4
3 out of 3 points
In 1980, only 1% to 5% of all Staphylococcus aureus isolates were MRSA strains. Now
60% to 70% of S. aureus isolates are MRSA strains. This is an example of:
Correct a.
Answer: Directional selection of
bacteria

 Question 5
3 out of 3 points
In what way is artificial selection different from natural selection?

Correct e.
Answer: In artificial selection, human preference is the selecting force; in natural
selection, environmental conditions are the selecting force.

 Question 6
3 out of 3 points
The phrase “survival of the fittest” is somewhat misleading because it implies that:

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Exam (elaborations)

BIOL 1001 WEEK 5 EXAM WITH ANSWERS Fall 2022

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