1. Why must DNA be able to make copies of itself?
2. Define DNA replication?
3. What is the first step that must occur in DNA replication?
Hi Dannie,
1. In order for a cell to reproduce it must copy its DNA to pass on its genetic information.
2.DNA replication is the process of duplicating the DNA to make 2 identical copies.
3.The first step of DNA replication is the separation of the 2 DNA strands.
1. DNA must be able to make copies of itself because it is essential for cell division, growth, and the transmission of genetic information from one generation to the next. Without the ability to replicate, organisms would not be able to reproduce and pass on their genetic material, leading to the extinction of species.
2. DNA replication is the process by which a cell duplicates its DNA to produce two identical copies. It occurs during the S phase of the cell cycle in preparation for cell division. In this process, the double-stranded DNA molecule unwinds and separates into two strands, and each strand serves as a template for the synthesis of a new complementary strand. As a result, two identical DNA molecules are generated, each with one original strand and one newly synthesized strand.
3. The first step that must occur in DNA replication is the unwinding of the DNA double helix. The helicase enzyme plays a crucial role in this process. It binds to specific points on the DNA molecule called origins of replication and moves along the DNA, separating the two strands by breaking the hydrogen bonds between the nucleotide bases. This unwinding creates a replication fork, which is the site where DNA replication proceeds in both directions.