Review Test Submission: Exam Week 5
User
Course BIOL1001P8/BIOL1001L8/BIOL10018Introduction to Biology2019 Spring Qtr 02/27 05/21-
PT5
Test Exam Week 5
Started 5/11/19 6:43 AM
Submitted 5/11/19 7:01 AM
Due Date 5/15/19 1:59 AM
Status Completed
Attempt Score 50 out of 50 points
Time Elapsed 18 minutes out of 1 hour and 30 minutes
Instructions Please answer each question below and click Submit when you have completed the
Exam.
Results Correct Answers
Displayed
Question 1 3 out of 3 points
The phrase “survival of the fittest” is somewhat misleading because it implies that:
Correct Answer: c. The best possible organism will evolve
Question 2 3 out of 3 points
Choose the best answer. The logic of natural selection predicts that a population of organisms will undergo evolution if, and only
if, which of the following condition(s) exist?
Correct Answer: d. Both b and c.
Question 3
, Your friend was diagnosed with strep throat 2 months ago. She was treated with antibiotics for
10 days, but 2 weeks after treatment, the symptoms returned. She was given a different
antibiotic, and her symptoms again initially improved but then got worse. What is happening?
Choose the best answer.
Correct Answer:
d. Your friend was originally infected with bacteria that are resistant to at least two antibiotics.
Question 4
Which of the following occurs after the creation of a new allele?
Correct Answer:
a. The gene pool becomes more diverse.
Question 5
A biologist has been studying two populations of trout in Montana for the last 25 years, when the
two populations were established from one common population. In the southern population, the
fish now have a slightly different mouth shape. But the northern population hasn’t changed from
the original type. The new shape works well in catching the type of prey common in the habitat
of the southern population. Which explanation is the most likely explanation of the gene
differences in the two populations?
Correct Answer:
b. The gene that produces the variation is probably still present in a small percentage of the
northern population, but since there’s no advantage to having it, individuals with the variation
aren’t preferentially selected.
Question 6