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On the replication forks.
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There are several enzymes that 'unzip' DNA. These enzymes are collectively known as DNA helicases. DNA helicases are helix-destabilizing enzymes that bind to DNA at the or…igin of replication and break hydrogen bonds, thereby separating the two strands. This allows RNA polymerase to begin transcription (copying) of the DNA sequence.
One double stranded Dna molecule is separated into two single stranded Dna molecules. A large multitude of bioprocess possibilities subsequentially present themselves!
The strand of molecules become equal-molecules that don't relay on the nucleus.
transcription and replication
The substance that controls the unzipping of DNA are enzymes which are inform of proteins. This is considered to be one of the most complex processes in the cell.
Helicase unzips the double stranded DNA so that it can be replicated.
bases within the cells nucleus pair with the separated bases on the DNA strand
DNA splits, and mRNA and tRNA are there to create new strands for the new replicated DNA strand. This is what happens prior to mitosis in cell division.
When the DNA needs to be coppied to make something the body needs
The original strand of DNA is unzipped by an enzyme that breaks the hydrogen bonds between the bases. This process continues until the entire strand of DNA has been unzipp…ed and copied.
The hydrogen bonds connecting the nucleotide bases are broken so right down the center is where is is split for DNA Replication or Transcription.
The two DNA strands are subjected to an extremely controlled, and temporary, separation.
Down the middle, at the binding site of the base pairs.
DNA is unzipped for replication of DNA or transcription of mRNA.