Multiple Choice
Why haven't humans evolved a resistance to the common cold?
A) Colds are effectively killed by antibiotics, so there's no need.
B) Cold viruses haven't been in existence long enough to exert selective pressure.
C) Colds are not serious enough to remove nonresistant variants from the population.
D) We could evolve resistance if we stopped taking so many over-the-counter medications for colds.
Correct Answer:
Verified
Correct Answer:
Verified
Q47: When a population of organisms is evolving,
Q48: Which plant is the most fit?<br>A) a
Q49: What causes the disease tuberculosis?<br>A) a particular
Q50: Why is widespread resistance to tuberculosis (TB)
Q51: True or false: Any allele that's present
Q53: What is the primary body part affected
Q54: Which event is the most direct (or
Q55: What traits increase fitness in a particular
Q56: Which sequence of events describes natural selection?<br>A)
Q57: If you wanted to see natural selection