Agroup of eight students has taken a sample of their own cheek cells, purified the dna, and used a restriction enzyme known to cut at zero, one, or two sites in a particular gene of interest. they then run the fragments through gel electrophoresis and use a fluorescent probe. why might they be conducting such an experiment.

B) The two students who have two fragments have one restriction site in this region.

Explanation:

i think that it is plants

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds