They make up 50% of the human genome, and 90% of the maize genome, where they were first discovered.
In bacteria, one type of them is the insertion element. P and gypsy elements are ones found in Drosophila, and two human types are LINEs and SINEs, which include Alu. Unlike the retro variety, which uses an mRNA intermediate and reverse transcriptase, the class 2 variety uses a cut-and-paste method and does not leave a copy of itself behind. They are mutagens, and can cause diseases by disrupting stretches of coding DNA. They make up 50% of the human genome, and 90% of the maize genome, where they were first discovered. For 10 points, Barbara McClintock discovered which moveable genetic elements, also known as "jumping genes"?
In bacteria, one type of them is the insertion element. P and gypsy elements are ones found in Drosophila, and two human types are LINEs and SINEs, which include Alu.
{transposons} [or {transposable} genetic elements; prompt on “{jumping genes}” before they're mentioned]