Question

The restriction enzymes of bacteria protect the bacteria from successful attack by bacteriophages, whose genomes can be degraded by the restriction enzymes. The bacterial genomes are not vulnerable to these restriction enzymes because bacterial DNA is methylated. This situation selects for bacteriophages whose genomes are also methylated. As new strains of resistant bacteriophages become more prevalent, this in turn selects for bacteria whose genomes are not methylated and whose restriction enzymes instead degrade methylated DNA. The outcome of the conflict between bacteria and bacteriophage at any point in time results from _____.

Select one:
a. frequency-dependent selection
b. evolutionary imbalance
c. heterozygote advantage
d. neutral variation
e. Hardy-Weinberg equilibrium

Answer 1

Frequency-dependent selection.

Step-by-step explanation:

Evolution is the process of change in the specie characteristics with respect to time. Different selections might act on population to adapt the species better in its environment.

the frequency dependent selection may be defined as a type of selection that can change the specie particular character depending upon the species composition. In the given question, the bacteria selection upon is frequency composition.

Thus, the correct answer is option (a).