Question

how do scientists collect environmental dna (edna) from carp in the waterways? a. they capture carp and extract dna directly from the fishes tissues. b. they collect carp eggs, from which they extract the fishes dna. c. they collect waste and tissue directly from carp and extract dna from it. d. they filter water samples to isolate dna from waste and tissue left behind by carp.

Explanation:

Environmental DNA (eDNA) is genetic material shed by organisms into their environment, including waste, mucus, or dead tissue, without needing to capture or directly sample the organism. Scientists isolate this DNA by filtering water samples to collect the trace genetic material left behind by the target species.

Answer:

D. They filter water samples to isolate DNA from waste and tissue left behind by carp.