Multiple Choice
Many kinds of disease-causing bacteria are resistant to the standard antibiotics that we use to control them. This is because
A) when bacteria are exposed to antibiotics they mutate.
B) there is genetic variety within the species and those that already have genes for resistance are the ones that reproduce.
C) new species of bacteria have evolved that are resistant to antibiotics.
D) when the size of the population of a species of bacterium is reduced, genetic variety decreases.
Correct Answer:
Verified
Correct Answer:
Verified
Q9: In order for the frequency of a
Q10: Which of the following would be necessary
Q11: The theory of natural selection was proposed<br>A)
Q12: Most species produce large numbers of offspring
Q13: If two alleles exist for a characteristic
Q15: In accordance with the Hardy-Weinberg concept, a
Q16: The genome is all the individual's<br>A) DNA.<br>B)
Q17: Natural selection determines how a species<br>A) breeds.<br>B)
Q18: In an individual, an allele may be
Q19: All of the _ are a species.<br>A)