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DNA replication occurs in living cells. The name of the sites where DNA replication occurs is called the origins of replication.
The topoisomerase enzyme uncoils the double helical structure of DNA during its replication to form the replication fork. In eukaryotes both posive and negative supercoils get unbind by topoisomerase I & II respectively.Topoisomerase isomerase unwinds DNA to form replication fork
in the nucleus
DNA Helicase unwinds and unzips the DNA. It separates the two strands of DNA so DNA replication can occur.
Nucleus.
DNA replication occurs in living cells. The name of the sites where DNA replication occurs is called the origins of replication.
Replication in prokaryotes differs from replication in eukaryotes for prokaryotic chromosomes have a single origin of replication, whereas eukaryotic chromosomes have many. Eukaryotes and prokaryotes for replication double stranded DNA, four kinds of dNTPS, primers, and origins.
The topoisomerase enzyme uncoils the double helical structure of DNA during its replication to form the replication fork. In eukaryotes both posive and negative supercoils get unbind by topoisomerase I & II respectively.Topoisomerase isomerase unwinds DNA to form replication fork
in the nucleus
Both occur at the Replication Fork. Don't let the name deceive you.
DNA Helicase unwinds and unzips the DNA. It separates the two strands of DNA so DNA replication can occur.
In the nucleus
maybe
Nucleus.
Nucleus - holds genomic DNA in eukaryotes. The nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell's chromosomes and is the place where almost all DNA replication and RNA synthesis occur.
The Replication of DNA does occur before the cell can divide.
Chromosomal replication and DNA replication takes place in S-phase.