Question

question 8 of 10
what is another name for lane d in the diagram?

a. a positive control
b. a remote sensor
c. a restriction enzyme
d. a negative control

Explanation:

In gel electrophoresis, a positive control is a sample that is known to give a particular result. Lane D has known fragment sizes (kilobase pairs). A positive control is used to verify that the experimental procedure (in this case, gel electrophoresis) is working correctly. A negative control would be a sample that is expected to give no result (not relevant here). A restriction enzyme cuts DNA (not a lane). A remote sensor is not relevant to gel - electrophoresis.

Answer:

A. A positive control