4 Answers
There can be DNA replication without cell division. During cell division, the parent cell gets divided into two daughter cells. However, if there is a repeated replication of DNA without any cell division, then this DNA will keep accumulating inside the cell. This would increase the volume of the cell nucleus, thereby causing cell expansion. An example of DNA duplication without cell division is commonly observed in the salivary glands of Drosophila. The chromosome undergoing repeated DNA duplication is known as polytene chromosome.
DNA replication can take place without cells division; as in case of formation of new mitochondria and chloroplasts.
Generally DNA replication is followed by cell division. But, there can be DNA replication without cell division.
DNA replication takes place in order to prepare for cell division. Cell division is the next logical step after DNA replication.