When DNA replication begins, ____.
A)the two DNA strands unwind from each other
B)the two DNA strands condense
C)two DNA molecules bond
D)old DNA strands move to pair with new strands
E)the sugar-phosphate backbone is degraded

Question

Quizplus · Accepted Answer

During DNA replication, the two strands of DNA unwind from each other, allowing each strand to serve as a template for the synthesis of a new complementary strand. This process is carried out by enzymes called DNA polymerases, which use the single-stranded template to add nucleotides to the new strand in a complementary fashion. As the nucleotides are added, they are joined together by the formation of covalent bonds between the sugar and phosphate groups, forming the sugar-phosphate backbone of the new strand.

When DNA Replication Begins, ____