Over the Course of Evolutionary Time, What Should Occur

question 81

Multiple Choice

Over the course of evolutionary time, what should occur?

• A)Methylated DNA should become fixed in the gene pools of bacterial species.
• B)Nonmethylated DNA should become fixed in the gene pools of bacteriophages.
• C)Methylated DNA should become fixed in the gene pools of bacteriophages.
• D)Methylated and nonmethylated strains should be maintained among both bacteria and bacteriophages, with ratios that vary over time.
• E)Both A and B are correct.

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Definitions:

Mean

The central value of a numeric dataset, determined by summing all the numbers and dividing by the total number of values present.

Frequency Distribution

A statistical representation showing the number of occurrences of each distinct value in a set of data.

Median

The middle value of a data set, which separates the higher half from the lower half of the data set.

Mean

The arithmetic average of a set of numbers, calculated by adding them up and dividing by the number of figures.