According to cell theory, how do new cells arise?

Cell theory is a fundamental principle in biology that outlines the properties and behavior of cells, summarizing key concepts about cell structure and function. One of the core tenets of cell theory states that all new cells arise from existing cells. This means that cells do not just appear out of nowhere; rather, they are generated from the division of pre-existing cells through processes such as mitosis and meiosis.

This reinforces the concept that cellular life is a continuous cycle, promoting the understanding that every living organism's cells originate from the division of other living cells. This view supports the idea of lineage and inheritance, central to biological development and the continuity of life on Earth. Thus, the statement that new cells arise from existing cells aligns perfectly with the established foundations of cell theory.