Question

which statement best describes how scientists obtain environmental dna (edna) from carp in the waterways near chicago? a. they find and collect carp eggs and extract the dna from them. b. they collect waste and tissue left by the fish and extract dna from it. c. they capture live fish and extract dna directly from their tissues. d. they collect and filter water samples to isolate the dna carp left behind.

Answer 1

Answer;

D. they collect and filter water samples to isolate the DNA carp left behind.

Step-by-step explanation;

-Environmental DNA is DNA that is collected from a variety of environmental samples such as soil, seawater, or even air rather than directly sampled from an individual organism. As various organisms interact with the environment, DNA is expelled and accumulates in their surroundings.

-Due to the fact that there may only be a few of the carp of eDNA in a large body of water, the process of analyzing environment DNA allows the scientists to determine the presence of these invasive species without positive visual identification.

Answer 2

The answer is D maybe? kinda has an extra word in it because my says

They collected water samples and isolated DNA the fish had left behind

so maybe. i would still put D.