Question

Illustrate schematically the process of initiation, elongation and termination during transcription of a gene in a bacterium.Class XIIMolecular basis of inheritance

Answer 1

In bacteria, the mRNA provides the template, tRNA brings aminoacids and reads the genetic code, and rRNAs play structural and catalytic role during translation.
    There is single DNA-dependent RNA polymerase that catalyses transcription of all types of RNA in bacteria.
    RNA polymerase binds to promoter and initiates transcription (Initiation)
    It somehow also facilitates opening of the helix and continues elongation
    Once the polymerases reaches the terminator region, the nascent RNA falls off, so also the RNA polymerase. This results in termination

Answer 2

Transcription

Explanation:

• The enzyme is presently prepared to make a strand of mRNA with a complementary arrangement of bases
• Elongation is the expansion of nucleotides to the mRNA strand
• Termination is the ending of translation, and occurs when RNA polymerase crosses a stop (end) arrangement in the gene  
• RNA at that point leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs
• Translation reads the hereditary code in mRNA and makes a protein.During translation, a strand of mRNA is made that is integral to a strand of DNA