Question

Choose all that apply:

There are about 27,000 human genes, however human body can potentially generate about 2 million different types of proteins. This is due to:

a) Post-translational processing of the proteins

b) Primary transcripts undergoing alternative splicing

c) Premature transcriptional termination by Pol II

d) Presence of multiple translational Start sites on the primary RNA transcript

Answer 1

B is the correct answer because alteenaalte splicing is responsible for so many protein from 1 gene .

Example-if mRNA has sequence like this

Exon intron Exon Exon intron Exon

Then intron,(non coding) will splice out and can form more than 1 protein.