Which conclusion can be drawn from the experimental observation that a single strand of DNA contains 2100 dA residues and 1800 dT residues?
A) There must have been some loss of material in the extraction because the number of dA and dT residues must be the same.
B) This is a palindromic sequence.
C) There must be 2100 dT and 1800 dA residues on the complementary strand.
D) This must be prokaryotic DNA
E) None of these

Question

Quizplus · Accepted Answer

The complementary nature of DNA strands means that adenine (A) pairs with thymine (T), so if one strand has 2100 dA residues, the complementary strand must have 2100 dT residues to pair with each dA, and similarly, if there are 1800 dT residues on one strand, there must be 1800 dA residues on the complementary strand.

Which Conclusion Can Be Drawn from the Experimental Observation That