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How does DNA replication differ in prokaryotes and eukaryotes?
1. In eukaryotic cells replication forks make several start sites along the DNA strand which forms replication "bubbles" which get larger the more DNA is copied, and stop when DNA replication is complete. In prokaryotic cell's DNA is formed in a loop, two replication forks start along one part of the loop (origin replication) and the replication forks copy DNA in opposite directions until they meet at the other side of the loop, making an exact copy of DNA.
How does DNA semi-conservative replication help prevent mutations in DNA replication?
Semi conservative replication prevents mutations during DNA replication because it produces 2 copies that each contained 1 of the original strands and 1 entirely new strand.
What does semi conservation mean in terms of DNA replication?
DNA Replication is semi-conservative because each DNA molecule is composed of 1 old strand and 1 new strand
Does DNA replication occur after telophase 1?
Telophase is a phase of mitosis. DNA replication must occur before mitosis begins. If it does not then the DNA chromosomes may not be consistent throughout the division of the cells.
What happens During replication DNA .?
During DNA replication the following occurs: 1) An enzyme called helicase separates the DNA strands (the space where they separate is called the replication fork). 2) DNA polymerase adds complementary nucleotides to the separated strand of DNA. 3) The DNA polymerase enzyme finishes adding nucleotides and there are two identical DNA molecules.
Process by which DNA copies itself?
Replication! 1) DNA splits 2) DNA copies 3) left with 2 copies of DNA! :)
Difference between DNA replication and transcription?
1. Replication is the duplication of two-strands of DNA. Transcription is the formation of single, identical RNA from the two-stranded DNA. 2. There are different proteins involved in replication and transcription. 3. In replication, the end result is two daughter cells, while in transcription, the end result is a protein molecule. 4. In transcription, DNA serves as the template for RNA synthesis.
What is the principle enzyme involved in DNA replication?
Two of the enzymes involved in DNA replication are helicase and DNA polymerase. Helicase unwinds the DNA strand and DNA polymerase makes a copy.
When does replication occur?
Biological replication is of two types 1: DNA replicationwhich occurs in nucleus during S stage of Interphase of cell cycle before cell division and 2 : cell division is considered cell replication .
Explain the replication of DNA Include the role of helicase?
1. Helicases unwind the double helix at the replication fork and single strand binding proteins (SSBs) stablilize unwound DNA ahead of the fork.
What is the difference between DNA polymerase I II and III?
DNA polymerase I, II, and III are enzymes involved in DNA replication in prokaryotes. DNA polymerase I is responsible for removing RNA primers during DNA replication and filling the gaps with DNA nucleotides. DNA polymerase II is involved in DNA repair pathways, particularly in response to DNA damage. DNA polymerase III is the main enzyme responsible for synthesizing a new DNA strand during replication. It has a high processivity and is the primary enzyme involved in synthesizing the leading and lagging strands of DNA.
What is the 2nd step of DNA replication?
1. DNA unzips 2. Nitrogen bonds floating outside of the nucleus attach with the unzipped DNA. 3. Two DNA strands with the exact same bases are formed.
