1. Mitosis: This is the process of cell division that produces two daughter cells that are genetically identical to the parent cell. It's used for growth, repair, and asexual reproduction.
Here's a simplified breakdown of mitosis:
* Interphase: The cell grows and replicates its DNA, preparing for division.
* Prophase: The replicated chromosomes condense, and the nuclear envelope breaks down.
* Metaphase: The chromosomes line up at the center of the cell.
* Anaphase: The sister chromatids (identical copies of each chromosome) separate and move to opposite poles of the cell.
* Telophase: New nuclear envelopes form around the separated chromosomes, and the cytoplasm divides (cytokinesis), resulting in two daughter cells.
2. Meiosis: This is the process of cell division that produces four daughter cells, each with half the number of chromosomes as the parent cell. It's used for sexual reproduction.
Here's a simplified breakdown of meiosis:
* Meiosis I: The parent cell replicates its DNA, and then the homologous chromosomes (one from each parent) pair up and exchange genetic material (crossing over). The homologous chromosomes are then separated into two daughter cells.
* Meiosis II: The daughter cells from Meiosis I divide again, separating the sister chromatids. This results in four haploid daughter cells (with half the number of chromosomes).
In summary:
* Mitosis is for growth, repair, and asexual reproduction; it produces two identical daughter cells.
* Meiosis is for sexual reproduction; it produces four daughter cells with half the number of chromosomes as the parent cell.
