The answer is Thymine.
—Evidence—
Within the DNA molecule, adenine bases located on one strand form chemical bonds with thymine bases on the opposite strand.
I think the answer is man
Separation of sister chromatids (D)
I hope I’m correct, but an inconclusive DNA results indicate O the two profiles do not match.
If that’s the incorrect answer, then my second best guess would be O human error.
Hope this helps, and have an amazing day! :))