1 Insertion â when a base is added to the sequence. 2  Deletion â when a base is deleted from the sequence.  Copy number variation (CNV) is a type of mutation where large chunks of DNA are inserted, repeated or lost. These regions of DNA can be between 10,000 and 5,000,000 bases long.
Wind deposition can result in dunes and loess deposits.
The term Aeolian describes the process of wind erosion, deposition, and how it is transported. It also has to do with the deposits that wind leave behind, such as sand dunes. A sand dune is an elongated mound of sand formed by wind or water. In this paper we are only going to look at wind made dunes.