Question

Researchers want to use eDNA to look for an invasive species in a waterway.

Which of these steps would they be likely to do last?

A. Sort DNA into bands on a gel.
B. Cut DNA into smaller pieces.
C. Collect samples of water with DNA.
D. Compare DNA samples with a control.

Answer 1

Researchers should first collect samples of water. Explanation: eDNA or environmental DNA is a technique that allows us to find DNA from the environment, rather than collecting living organisms. In this case, for analysis of species in a waterway we need to collect water first to later do the laboratory work.