Question

question 10 of 10
why would scientists use a control sample that has no dna from bighead carp in edna surveillance?
a. to verify that no dna has contaminated the gel
b. to amplify the dna in small samples
c. to cut sample dna into fragments
d. to serve as a positive control against samples

Explanation:

In eDNA surveillance, a control sample without bighead carp DNA is used to check for contamination. If there were no such control, any detected DNA could be due to contamination. Option B (amplification) is done by techniques like PCR. Option C (cutting DNA) is for restriction enzymes. Option D is incorrect as a sample with no bighead carp DNA is a negative control, not positive.

Answer:

A. To verify that no DNA has contaminated the gel