4 ms·
My bio course taught the terms introns and exons. Exons are the portions of DNA that are used to express proteins. Introns correspond to "junk DNA" and are re
by blisterpeanuts 10y ago
My bio course taught the terms introns and exons.
Exons are the portions of DNA that are used to express proteins.
Introns correspond to "junk DNA" and are removed prior to protein expression. Their function is not fully understood.
- deleted 10y ago[deleted]
- dekhn 10y agoThis is missing a ton of important details. Much of so-called junk DNA is in non-coding regions that are not within introns. For example, there are long regions containing just repetitive viral DNA sequences with no coding DNA anywhere; this is often what people mean when they say junk DNA. But those regions aren't intronic, because they are not spliced out of the preprocessed mRNAs.