In regards to the Central Dogma... Select one: a. Transcription involves RNA polymerase which is recruited to origins of replication by transcription factors b. Eukaryotic mature messenger RNA, exported from the nucleus to cytoplasm, has been spliced and modified at the 5' and 3' end. c. The 5' cap is a modified cytosine nucleotide and the 3' polyA tail is comprised of 50-250 alanine residues. The purpose is to stabilize the mRNA. d. The mature messenger RNA is translated by the ribosome in the cytoplasm. The ribosome reads the mRNA in a 5' -->3' direction while synthesizing protein in a N-->C direction e. multiple of the options are true