Hamilton's Rule reveals that the more closely related two individuals are:
a) the less likely they will be to mate with each other.
b) the more likely their inclusive fitness will be reduced via cooperation.
c) the more likely they will disperse from each other at maturity.
d) the more likely they will be competing for the same limited resources.
e) the more likely they are to act altruistically towards each other.
Ans: e) the more likely they are to act altruistically towards each other.
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The relatively short-term changes in allele frequencies within a species or population is
A. neither preserves nor rejects harmful variations in a population. B. preserves harmful variations and rejects favorable variations in a population. C. preserves favorable and harmful variations in a population. D. preserves favorable variations and rejects harmful variations in a population.
Epidemiologists at the CDC in Atlanta, GA, have called you in to investigate an increased incidence of leukemia in a remote region of Africa. Shortly after you arrive, an RNA virus was isolated from patients and found to induce leukemia in mice
At this point, you don't know the viral gene product or the mechanism that causes development of leukemia. One of your lab assistants has isolated a variant of the virus that is missing 20% of the genome of the original virus and does not induce leukemia in mice. a) How would you determine which portion of the genome is associated with the development of leukemia? b) How would you determine the viral product or mechanism associated with the development of leukemia? What will be an ideal response?
The length of introns varies, but the first intron is almost always ________ and the second is usually ________
a. short; longer b. long; shorter c. spliced; retained d. retained; spliced e. Both a and d
Which is not a characteristic of Helicobacter pylori?
A. Lives in the stomach B. Gram negative C. Curved rods D. Produces enteroxin that causes diarrhea E. Produces urease that buffers stomach acidity