Question

What happens to the two strands of a DNA molecule after replication? A.Both strands change the order of their bases and pair back again to form a different DNA molecule.

B.Each strand forms a new DNA molecule by pairing up with a complementary new strand. C.Each strand forms a single-strand DNA molecule. D. Each strand splits in two and forms a new double-strand DNA molecule.

Answer 1

"In both cases, replication occurs so quickly because multiple polymerases can synthesize two new strands at the same time by using each unwoundstrand from the original DNA double helix as a template. One of these original strands is called the leadingstrand, whereas the other is called the lagging strand."

- Nature Journal

*I pretty much gave you the asnwer, now figure it out with the information I provided!

Answer 2

The initiation of DNA replication occurs in two steps. First, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on theDNA strands, thereby pulling apart the two strands.