If a Circular DNA Containing No Supercoils Is Incubated with Ethidium

question 28

Multiple Choice

If a circular DNA containing no supercoils is incubated with ethidium bromide

• A)the number of twists will increase,positive supercoils will develop,and the linking number will remain the same.
• B)the number of twists will decrease,positive supercoils will develop,and the linking number will remain the same.
• C)the number of twists will increase,negative supercoils will develop,and the linking number will remain the same.
• D)the number of twists will decrease,negative supercoils will develop,and the linking number will remain the same.
• E)the linking number will be altered,and both the writhing number and twist will adjust accordingly.