Answer/ Explanation:
During the cell cycle, the cell divides to produce daughter cells carrying the same genetic information. In order to pass on the genetic information, the DNA must be replicated. DNA replication is said to be semi-conservative, because 1 parental double stranded DNA molecule forms 2 daughter double stranded DNA molecules, each carrying a strand from the parental molecule.
Various enzymes are involved in the process of DNA replication, such as DNA helicase, and DNA polymerase. The DNA strand is unwound, and a new strand is synthesised from the template strand through a process called complementary base pairing. This means the newly synthesised strand is complementary to the original strand.
Nucleotides are added to the newly synthesised DNA strand by DNA polymerase, according to the information in the template strand. DNA polymerase has proof-reading capabilities, allowing it to recognise and fix any errors it might have made in the nucleotide sequence.