Table of Contents
What is terminator in DNA?
A sequence in DNA that signals termination of transcription to RNA Polymerase. This should not be confused with terminator codons that are the stopping signal for translation. Also known as: terminator, rho-independent termination site.
What is gene termination?
termination sequence. The sequence of DNA which signals the transcription to stop. , which follows the promoter and coding region, is the last region of the. gene. The fundamental unit of heredity that carries genetic information from one generation to the next.
What is a terminator in protein synthesis?
Terminators are genetic parts that usually occur at the end of a gene or operon and cause transcription to stop. In prokaryotes, terminators usually fall into two categories (1) rho-independent terminators and (2) rho-dependent terminators.
What is the function of terminator?
The role of the terminator, a sequence-based element, is to define the end of a transcriptional unit (such as a gene) and initiate the process of releasing the newly synthesized RNA from the transcription machinery.
What is termination in biology?
In general, the term termination refers to the state, act, or process of reaching the end or bringing to an end. In biology, the term often denotes to a biological process where a biological entity is being ended or completed.
What is the role of the terminator in the transcription unit?
Solution : The terminator is a component of transcription unit, which defines the end of the process of transcription. It is a code on the mRNA for which the tRNA has no anticodon and so the polypeptide chain breaks.
What does the terminator region do?
The terminator region, on the other hand, is the nucleotide sequence that determines the detachment of RNA polymerase from the DNA template strand, which occurs towards the end of the transcription process.
What is a terminator in biology quizlet?
Terminator. In prokaryotes, a special sequence of nucleotides in DNA that marks the end of a gene. It signals RNA polymerase to release the newly made RNA molecule, which then departs from the gene. Transcription Unit.
What is termination in prokaryotic DNA replication?
Termination of DNA replication occurs when the two forks meet and fuse, creating two separate double-stranded DNA molecules. In the well-studied bacteria Escherichia coli and Bacillus subtilis, this occurs in the terminus region, which is situated diametrically opposite the origin.
Where is the terminator sequence found?
The terminator sequence in DNA contains a 20 basepair GC-rich region of dyad symmetry followed by a short poly-A tract or “A stretch” which is transcribed to form the terminating hairpin and a 7–9 nucleotide “U tract” respectively.
What is a terminator made of?
In the television series Terminator: The Sarah Connor Chronicles, Cameron establishes that modern Terminators are made of coltan for heat resistance, while previous models were made of titanium.
What does a terminator sequence do quizlet?
When RNA polymerase reaches the terminator sequence, transcription stops & RNA chain is released. “Termination” defines dissociation of the RNA polymerase II from the DNA template during transcription.
How is transcription terminated quizlet?
In eukaryotic transcription, how does RNA polymerase 1 transcription termination occur? A termination factor binds to the end of the rRNA gene. When RNA polymerase 1 comes into contact with this protein, it will fall off, ending transcription.
What is termination in DNA replication in eukaryotes?
In eukaryotic cells, termination of replication usually occurs through the collision of the two replicative forks between two active replication origins. The location of the collision varies on the timing of origin firing.