A cell spends most of its life in the interphase stage where it is able to grow, create DNA and obtain nutrients in preparation for cell division. Interphase is not a part of meiosis or mitosis, but rather a stage that lets the cell perform required functions for reproduction.
Some cells never leave the interphase stage because they die before they are able to reproduce. Errors in DNA replication or inadequate nutrients may cause the premature death of a cell.
Three phases compose interphase: gap 1, synthesis and gap 2. In gap 1, the cell grows. During synthesis, the cell replicates its DNA. The cell resumes growth to prepare for cell division in gap 2.