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What happen first at each orgin of replication?
At each origin of replication, the DNA helicase unwinds the double helix, creating two replication forks where DNA synthesis can occur. This process is followed by the binding of single-strand DNA-binding proteins to stabilize the separated strands and the initiation of DNA synthesis by DNA primase, which synthesizes short RNA primers for DNA polymerase to extend from.
When during the cell cycle do mutations occur?
Mutations can occur at any point during the cell cycle, but they are most likely to happen during the DNA replication phase, which is part of the interphase stage.
What must happen to a DNA molecule before RNA polymerase can make RNA?
The DNA molecule must first unwind and separate into two strands. This process is called transcription, during which RNA polymerase can then read and transcribe one of the DNA strands to synthesize RNA.
What reduces errors in DNA replication?
There are an average of 6 errors for every cell division, most of which either occur in the 95% percent of DNA that does not code for proteins or are relatively unharmful substitution mutations.
Two things that happen during interphase?
Cell growth: During interphase, cells grow in size by producing new organelles such as mitochondria and ribosomes. DNA replication: The cell duplicates its DNA during interphase to ensure that each daughter cell will receive a complete set of genetic information during cell division.
Would most likely happen if DNA polymerize were not functioning properly during DNA replication?
as helicase unwinds the double stranded DNA DNA polymerase is responsible for inserting the new coresponding nucleotides during replication and wihtout it the unwound DNA would remain single stranded.
What steps happen lasts during transcription?
RNA polymerase reaches the end of a gene.
What stage of mitosis does replication happen in?
Replication does not take place during mitosis. It takes place before meiosis begins.
Does DNA replication happen before or during Meiosis?
It happens during interphase of the cell cycle.
If e. coli DNA polymerase was used instead of thermus aquaticus DNA polymerase in a pcr polymerase chain reaction procedure what would happen?
Unlike Taq DNA polymerase, E.coli DNA polymerase is not heat-stable and will denature during the strand denaturation step of the PCR reaction.
What happen first at each orgin of replication?
At each origin of replication, the DNA helicase unwinds the double helix, creating two replication forks where DNA synthesis can occur. This process is followed by the binding of single-strand DNA-binding proteins to stabilize the separated strands and the initiation of DNA synthesis by DNA primase, which synthesizes short RNA primers for DNA polymerase to extend from.
What steps happen first during during transcription?
At first during transcription, RNA polymerase binds the promoter region of a gene to be transcribed. The end product would be the synthesized mRNA.
What would happen at molecular level if DNA polymerase and RNA polymerase enzymes collided?
If DNA polymerase and RNA polymerase enzymes were to collide, it could disrupt the replication/transcription processes. The collision may lead to stalling of the enzymes, potentially causing errors in copying genetic information and impairing the cell's ability to produce functional proteins. This could have detrimental effects on cell function and viability.
When during the cell cycle do mutations occur?
Mutations can occur at any point during the cell cycle, but they are most likely to happen during the DNA replication phase, which is part of the interphase stage.
The process of copying the DNA molecule is called DNA?
replication. In this process, the two strands of the DNA molecule unwind and each strand serves as a template for the synthesis of a new complementary strand. This results in two identical copies of the original DNA molecule.
What must happen to a DNA molecule before RNA polymerase can make RNA?
The DNA molecule must first unwind and separate into two strands. This process is called transcription, during which RNA polymerase can then read and transcribe one of the DNA strands to synthesize RNA.
What is a major thing happening to a cell during?
The cell is growing and, most importantly, checking to see that replication is possible during the next phase which is synthesis. Checks and repairs to the genetic material happen during G1.
