What describes the greater fitness of individuals who carry one copy of the sickle-cell allele in areas where malaria is common?
A) low genetic variability
B) heterozygote advantage
C) the benefit of mutualism
D) competitive exclusion
B
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Diphtheria toxin is produced only by strains of Corynebacterium diphtheriae that are infected with a particular bacteriophage. This is an example of
A. lysogenic conversion. B. induction. C. conjugation. D. lysis.
Dissolved oxygen content in stream water is affected by
a. organic matter in the water. b. overgrowth of algae. c. water nutrient levels. d. all of the above.
Which assay allows you to identify the exact location of the protein-binding sequence within a promoter?
A) western blotting B) in situ hybridization C) pulse-chase assay D) Southern blotting E) DNA footprint protection assay
Some antibiotics can harm the ribosomes in animal cells. Which of the following would you predict to be the most likely long-term effect of damage to ribosomes?
What will be an ideal response?