Biology 10th Edition by Eldra Solomon,Charles Martin,Diana Martin,Linda Berg

تمرين 8

The statement "DNA replicates by a semiconservative mechanism" means that
A) only one DNA strand is copied
B) first one DNA strand is copied, and then the other strand is copied
C) the two strands of a double helix have identical base sequences
D) some portions of a single DNA strand are old, and other portions are newly synthesized
E) each double helix consists of one old and one newly synthesized strand