Industry Statement on the recycling of asphalt mixes and use of waste of asphalt pavements. Acknowledgements. This document has been developed under the authority of The European Asphalt Pavement Association. (EAPA) Committee on Health, Safety and Environment.
They do this by alternative splicing (AS). Alternative splicing means, that during the RNA splicing event different combinations of exons can be joined together to create a diverse array of mRNAs from a single pre-mRNA. When these are translated they produce different proteins which do different things.
C) A poly-A tail is added to the 3' end of an mRNA and a cap is added to the 5' end. RNA polymerase in a prokaryote is composed of several subunits. Most of these subunits are the same for the transcription of any gene, but one, known as sigma, varies considerably.