15. Central Dogma & Gene Regulation

PRACTICE:In prokaryotes, as soon as RNA polymerase synthesizes the 5' end of mRNA, ribosomes come in and initiate translation before transcription is completed. This is called ____.

PRACTICE:During which stage of bacterial transcription are sigma (σ) factors involved?

PRACTICE:_____ allows RNA polymerase to recognize a specific promoter sequence of a gene.

PRACTICE:'Cistron' is another word for 'gene'. Which of these answers are characteristics of polycistronic mRNA?
a) Only found in prokaryotes.  
b) Single mRNA strand, carrying multiple genes.
c) Single mRNA strand can be translated into many proteins.
d) All of the above are characteristics of polycistronic mRNA.

Which of the following statements is true?