self-duplication

noun
UK /ˌself djuːplɪˈkeɪʃən/
US /ˌself duːplɪˈkeɪʃən/

When something makes an exact copy of itself.

The tiny cell began self-duplication and soon there were two cells.


OTHER MEANINGS

2. The process of a computer program making a copy of itself.

The virus used self-duplication to spread across the network.

3. The act of repeating one's own actions or words.

His self-duplication of the teacher's instructions made everyone laugh.

4. In biology, the copying of genetic material within a single organism.

Self-duplication of DNA happens before a cell divides.