One strand
is the correct answer. DNA stands for Deoxyribonucleic acid while RNA stands for ribonucleic acid. DNA molecule has two strands while RNA molecule has one strand. There are three types of RNA namely mRNA, tRNA and rRNA.
How many strands of DNA are transcribed to mRNA?
DNA is double-stranded, but only
one strand
serves as a template for transcription at any given time. This template strand is called the noncoding strand. The nontemplate strand is referred to as the coding strand because its sequence will be the same as that of the new RNA molecule.
How many strands make up mRNA?
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 is the transcribed strand of mRNA?
The DNA strand that is transcribed for a given mRNA is termed
the template strand
. The complementary DNA strand is called the nontemplate strand. Note that the mRNA has the same sequence (with U substituted for T) as that of the nontemplate strand.
Are both strands of DNA transcribed into mRNA?
Although, for each gene, RNA is transcribed from only one of the DNA strands, the same DNA strand is not necessarily transcribed throughout the entire chromosome or through all stages of the life cycle. … The DNA strand that is transcribed for a given mRNA is termed the
template strand
.
What are the 4 steps of transcription?
- Initiation. The DNA molecule unwinds and separates to form a small open complex.
- Elongation. RNA polymerase moves along the template strand, synthesising an mRNA molecule.
- Termination. In prokaryotes there are two ways in which transcription is terminated.
- Processing.
What happens after mRNA is transcribed?
After the transcription of DNA to mRNA is complete,
translation
— or the reading of these mRNAs to make proteins — begins. … A long chain of amino acids emerges as the ribosome decodes the mRNA sequence into a polypeptide, or a new protein.
What are the 5 steps of transcription?
- of 05. Pre-Initiation. Atomic Imagery / Getty Images. …
- of 05. Initiation. Forluvoft / Wikimedia Commons / Public Domain. …
- of 05. Promoter Clearance. …
- of 05. Elongation. …
- of 05. Termination.
How is mRNA transcribed?
mRNA is
synthesized in the nucleus using the nucleotide sequence of DNA as a template
. This process requires nucleotide triphosphates as substrates and is catalyzed by the enzyme RNA polymerase II. The process of making mRNA from DNA is called transcription, and it occurs in the nucleus.
Can both strands be transcribed?
Unlike DNA replication, in which both strands are copied,
only one strand is transcribed
. The strand that contains the gene is called the sense strand, while the complementary strand is the antisense strand.
Can both strands of DNA act as template?
During
DNA replication
, both strands of the double helix act as templates for the formation of new DNA molecules. Copying occurs at a localized region called the replication fork
What are the 6 steps of transcription?
RNA then undergoes translation to make proteins. The major steps of transcription are
initiation, promoter clearance, elongation, and termination
.
Is the coding strand always 5 to 3?
By convention, the coding strand is the strand used when displaying a DNA sequence. It is presented in the
5′ to 3′ direction
.
Does mRNA attach to DNA?
mRNA isn’t the same as DNA
, and it can’t combine with our DNA to change our genetic code. However, mRNA isn’t the same as DNA, and it can’t combine with our DNA to change our genetic code.
How do you code DNA mRNA?
| DNA Coding Strand (Codons) 5′ > > > – – – – – – T T C – – – – – – > > > 3′ | mRNA Message (Codons) 5′ > > > – – – – – – U U C – – – – – – > > > 3′ | tRNA Tranfer (Anti-codons) 3′ < < < A A G < < < 5′ | Protein Amino Acid Amino > > > Phenylalanine > > > Carboxy |
|---|
