THE MOLECULAR BASIS OF INHERITANCE
GENE MUTATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
DNA Replication
|
|
|
Transcription
|
|
|
Translation
|
|
|
None of them
|
Detailed explanation-1: -In prokaryotic cells, transcription (DNA to mRNA) and translation (mRNA to protein) are so closely linked that translation usually begins before transcription is complete.
Detailed explanation-2: -Translation of an mRNA molecule by the ribosome occurs in three stages: initiation, elongation, and termination. During initiation, the small ribosomal subunit binds to the start of the mRNA sequence.
Detailed explanation-3: -In this situation, translation begins at the 5’ end of the mRNA while the 3’ end is still attached to DNA. In all types of cells, the ribosome is composed of two subunits: the large (50S) subunit and the small (30S) subunit (S, for svedberg unit, is a measure of sedimentation velocity and, therefore, mass).
Detailed explanation-4: -The process of forming a polypeptide chain from mRNA codons is known as translation. It takes place in four steps namely, tRNA charging, Initiation, Elongation, and Termination.