When is DNA copied?

1 Answer

Answer:

DNA is copied during interphase (S phase) before mitosis and just before meiosis.

Explanation:

In human, mitosis produces diploid daughter cells which have the same number of chromosomes as the parent cell.

http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells2.html

Meiosis produces gametes (sperm or egg) which are haploid, meaning these cells have half the number of chromosomes as body cells such as skin cells.

https://en.wikipedia.org/wiki/Meiosis

DNA is copies using a process called semiconservative replication. Here is a video to help explain how the copying happens.

Hope this helps!