Messenger RNA, Ribosomal RNA, Transfer RNA are the 3 major types of RNA. What process are they involved in?

If I'm not mistaken, and I don't think I am, these are involved in the replication of DNA. The DNA 'unzips' and releases these 3 components of RNA. They work together to find the compatible components needed to make up an exact copy of the previous DNA strand. After this they 'zip' back up and there are two strands of DNA.