Explain ONE of the following:A) How telomerase extends the e…

Explain ONE of the following:A) How telomerase extends the ends of chromosomes. Be sure to describe the role telomerase, the RNA within the telomerase, and how both strands of DNA are lengthenedB) How the poly-A tail is added to the end of the mRNA. Be sure todescribe the role of the consensus sequence, the cleavage site, RAT1, and polyA polymeraseC) How introns are removed from pre-mRNA. Be sure to describe the snRNPsand explain the role of their RNAs, explain where the consensus sequences are and their role. Describe the shape the intron forms as it is removed.