The Three Bacterial Markers A,b,and C Are Linked,but Their Order

question 24

Multiple Choice

The three bacterial markers a,b,and c are linked,but their order is unknown.A cotransduction experiment is performed and the following results are obtained. - Markers a and b are co-transduced at a frequency of 2%.
- Markers a and c are co-transduced at a frequency of 20%.
- Markers b and c are co-transduced at a frequency of 65%.
What can be concluded about the arrangement of the three markers on the bacterial chromosome?

• A)The order is a-b-c,and b is closer to a than to c.
• B)The order is a-b-c,and b is closer to c than to a.
• C)The order is a-c-b,and c is closer to b than to a.
• D)The order is b-a-c,and a is closer to b than to c.
• E)The order is b-c-a,and c is closer to a than to b.

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