Plant and animal cells both undergo mitotic cell divisions. Their main difference is how they form the daughter cells during cytokinesis. During that stage, animal cells form furrow or cleavage that gives way to formation of daughter cells. Due to the existence of the rigid cell wall, plant cells don't form furrows.
There are two main reasons why cells divide rather than continuing to grow larger and larger: ... more demands the cell places on its DNA. If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane.
Answer:DNA replication occur in mitosis process at( S-synthesis) interphase stage
In multicellular organism