Define cell. Describe the general role of a cell.

Cells are the basic building blocks of all living things. ... Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.

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as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.