<human>:  How many different types of DNA are there?
<bot>: There are three major types of DNA: euchromatin, heterochromatin, and meiosis. Euchromatin is the part of the genome that makes up the bulk of the genetic material, and is found in the nucleus of a cell. Heterochromatin is the part of the genome that is located outside of the nucleus, and is found in the cell's cytoplasm. Meiosis is the process by which a cell divides to form two new cells.