If two species have similar DNA sequences, it would indicate that they A. Have no evolutionary relationship
B. Share a common ancestor
C. Are not closely related
D. Will have similar fitness

Explanation:

90% sure its gonna be B lol

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

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