DNA and RNA?

Question

How do you transcribe DNA into mRNA?

Answer 1

In a cell, an enzyme complex, the most central of which is RNA Polymerase is responsible for catalyzing the process.

Check out the animated movie of RNA being created from a DNA template:

http://www.johnkyrk.com/DNAtranscription.html

Answer 2

I use a 3-step process just because we have to know how to do all 3 steps. I go from the DNA template strand, to the DNA coding strand, to mRNA.

To go from the DNA template strand to the coding strand, just match with opposing bases. For example, if the DNA template strand was:

GTC ATG GCA ATT

the DNA coding strand would be:

CAG TAC CGT TAA

Then you transcribe the coding strand to mRNA by simply replacing the T's in the coding strand with U's. So the above sequence would be transcribed to:

CAG UAC CGT TAA

If you wanted to go from DNA to mRNA, you would change the C's to G's, the G's to C's, the A's to U's, and the T's to A's. Hope that helps!!

Answer 3

During transcription, RNA polymerase makes a copy of a gene from the DNA to mRNA as needed. This process is similar in eukaryotes and prokaryotes. One notable difference, however, is that eukaryotic RNA polymerase associates with mRNA processing enzymes during transcription so that processing can proceed quickly after the start of transcription. The short-lived, unprocessed or partially processed, product is termed pre-mRNA; once completely processed, it is termed mature mRNA.

Answer 4

very carefully....