The correct answer is option 2, mitochondria. DNA is not typically found outside the nucleus, as it is primarily located within the nucleus of a cell. The nucleus is often referred to as the "control center" of the cell because it contains genetic information in the form of DNA. However, there are a few exceptions to this rule. Mitochondria, which are known as the "powerhouses" of the cell, contain a small amount of their own DNA. This mitochondrial DNA (mtDNA) is separate from the nuclear DNA and is involved in the production of energy within the mitochondria. So while the majority of DNA is found within the nucleus, some DNA can be found in mitochondria.