What does a gene need to be transcribed?

What does a gene need to be transcribed?

Transcription occurs when there is a need for a particular gene product at a specific time or in a specific tissue. During transcription, only one strand of DNA is usually copied. This is called the template strand, and the RNA molecules produced are single-stranded messenger RNAs (mRNAs).

What determines if a gene is transcribed?

Various factors control how much a gene is transcribed. For instance, how tightly the DNA of the gene is wound around its supporting proteins to form chromatin can affect a gene’s availability for transcription. These important proteins help determine which genes are active in each cell of your body.

What needs to happen in order for a eukaryotic gene to be transcribed?

Eukaryotic transcription is carried out in the nucleus of the cell and proceeds in three sequential stages: initiation, elongation, and termination. Eukaryotes require transcription factors to first bind to the promoter region and then help recruit the appropriate polymerase.

What must be removed from a eukaryotic gene before it can be transcribed by a prokaryotic cell?

Eukaryotic transcripts are also more complex than prokaryotic transcripts. For instance, the primary transcripts synthesized by RNA polymerase contain sequences that will not be part of the mature RNA. These intervening sequences are called introns, and they are removed before the mature mRNA leaves the nucleus.

What is pribnow sequence?

The Pribnow box (also known as the Pribnow-Schaller box) is a sequence of TATAAT of six nucleotides (thymine, adenine, thymine, etc.) It is also commonly called the -10 sequence, because it is centered roughly ten base pairs upstream from the site of initiation of transcription.

What are the different forms of a single gene called?

Two different forms of a single gene are called ‘alleles. ‘ The alleles you inherit can be either dominant or recessive.

What is the first step of gene expression?

Transcription
Transcription is the first step of gene expression. During this process, the DNA sequence of a gene is copied into RNA. Before transcription can take place, the DNA double helix must unwind near the gene that is getting transcribed. The region of opened-up DNA is called a transcription bubble.

What are the requirements for gene transcription in prokaryotic cells?

Transcription initiation Which of the following are the requirements for gene transcription to be initiated in prokaryotic and eukaryotic cells? RNA polymerase is key to transcription, and it must have access to the DNA helix and must be capable of binding to the gene’s promoter for transcription to begin.

How are regulatory proteins related to the transcription apparatus?

In addition to a DNA-binding motif, regulatory proteins have a domain that allows interaction with which of the following? The transcription apparatus In order for a gene to be transcribed, _____ polymerase must have access to the DNA double helix and be able to bind the gene’s ______.

Which is the first stage of the transcription process?

Transcription is the first stage of the expression of genes into proteins. In transcription, an mRNA (messenger RNA) intermediate is transcribed from one of the strands of the DNA molecule.

How is RNA polymerase key to gene transcription?

RNA polymerase is key to transcription, and it must have access to the DNA helix and must be capable of binding to the gene’s promoter for transcription to begin. Changes in gene expression in prokaryotes are tightly linked to changes in the environment.