Answer:
B
Explanation:
Proofreading" the new DNA strands in
DNA replication
Mitosis is responsible for the growth of a eukayotic cell. during mitosis a cell divides and to 2, unlike meiosis which divides in to 4. mitosis is the asexual reproduction of cells, such as hair ,skin and nail cells.
Answer/Explanation:
First, initiator protein unwinds a short stretch of the DNA double helix. <u>The length of the DNA double helix about to be copied must be unwound. </u> In addition, the two strands must be separated, much like the two sides of a zipper, by breaking the weak hydrogen bonds that link the paired bases. Once the DNA strands have been unwound, they must be held apart to expose the bases so that new nucleotide partners can hydrogen-bond to them. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands.
None of the above is correct.