Whats the difference between coding and non-coding DNA. Coding for what?
Coding DNA is transcribed into messenger RNA to make proteins, or into other types of RNA molecules, such as transfer RNA or ribosomal RNA, that function in protein synthesis. Because it “codes” for proteins, it is under greater selective pressure to maintain its integrity than is non-coding DNA. Some regions of non-coding DNA serve important regulatory functions, such as controlling the transcription of adjacent coding DNA.