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.
Landforms shaped by Wind. 1  Areas where there is little or no vegetation are usually the most effected places that experience shaping due to wind. This happens when the wind picks up weathered rock materials and uses them to sand-blast larger rock structures on the zone closet to the ground.