Which describes the flow of information in protein synthesis? A. RNA to DNA to protein B. DNA to RNA to protein C. Protein to DNA to RNA D. Protein to RNA to DNA
1 Answer
B...
Explanation:
The Central Dogma in molecular genetics:
DNA
DNA is the central archive containing all the genetic info a living organism needs. This info is divided into Genes.
In a process called Transcription, the info contained in a Gene is copied into a short strand of a slightly different nucleic acid: RNA . This short strand called messenger RNA ( mRNA ) is then "Translated" into Protein.
Therefore, the answer is B...
Note: "The Central Dogma" was severely shaken when a viral enzyme was discovered that was able to copy RNA back into DNA:
Aptly named Reverse Transcriptase, it doesn't invalidate the "dogma": it doesn't produce proteins itself. Moreover, the DNA synthesised by RT will still be transcribed (into mRNA) by the host cell. This mRNA will then be used for the production of proteins....
Here is a video which summarizes the central dogma of molecular biology using DNA Workshop from PBS.
Video from: Noel Pauller
