The most common classes of retrotransposable elements in the human genome are short interspersed elements (SINEs) and LINEs. The Alu element, present in over 10 6 copies per haploid genome, is the ...
Alu elements are primate-specific short interspersed elements (SINEs), over 1 million copies of which are present in the human genome; thus, Alu elements are useful targets for detecting human cells.