AP BIOLOGY

Detailed explanation-1: -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 the DNA strands, thereby pulling apart the two strands.

Detailed explanation-2: -This process entails the recognition of each nucleotide in the DNA template strand by a free (unpolymerized) complementary nucleotide, and it requires that the two strands of the DNA helix be separated.

Detailed explanation-3: -Because each of the two strands in the dsDNA molecule serves as a template for a new DNA strand, the first step in DNA replication is to separate the dsDNA. This is accomplished by a DNA helicase.

Detailed explanation-4: -DNA replication is the process by which the genome’s DNA is copied in cells. Before a cell divides, it must first copy (or replicate) its entire genome so that each resulting daughter cell ends up with its own complete genome.

Detailed explanation-5: -DNA is double stranded in nature, and in order to be replicated, this structure has to be unzipped. The site of initial unwinding is referred to as the origin of replication. After that, other enzymes add new pieces of DNA to the unzipped strands in order to synthesize two new DNA molecules.