Yes, in fact there are no phases in which Dna does not occur.
No, it occurs after telophase, which is after anaphase.
anaphase
prophase
During mitotic anaphase, sister chromatids are pulled apart and move toward opposite poles of the cell. However, DNA replication does not occur during this phase; it takes place during the S phase of the cell cycle prior to mitosis. Additionally, the nuclear envelope remains intact during anaphase, as it is broken down during prophase.
anaphase
Anaphase I, and then again in Anaphase II--two seperations occur in meiosis.
DNA is condensed during Prophase, Anaphase and Telophase. Aka, M phase
anaphase
prophase, metaphase, anaphase, telophase
Nondisjunction can occur during Anaphase in mitosis, or either Anaphase I or II in meiosis. This is the step of each aformentioned process when the chromosomes are separated into different regions within the dividing cell, so they can be segregated further by cytokenesis.
The prophase phase is when DNA winds up into chromosomes. It winds up to remain organized. Cytokinesis is when the DNA unwinds again.
During anaphase of mitosis or anaphase II of meiosis, the replicated DNA strands move toward opposite poles of the cell. This happens after the sister chromatids are separated and pulled apart by the spindle fibers.