Transposable element
Mariner-like elements are another prominent class of transposons found in multiple species including humans. The Mariner transposon was first discovered by Jacobson and Hartl in Drosophila. This Class II transposable element is known for its uncanny ability to be transmitted horizontally in many species. There are an estimated 14 thousand copies of Mariner in the human genome comprising 2.6 million base pairs.