Meiosis
MEIOSIS Intro . In most of the cells in your body, new cells are made through mitosis. This process creates exact copies of cells for growth and repair. But when it comes to reproduction, things work differently.Organisms that reproduce sexually—like humans, dogs, trees, and even insects—use a special type of cell division called meiosis Meiosis I Prophase I Chromosomes condense Homologous chromosomes pair up to form tetrads Crossing over occurs (exchange of genetic material between chromatids) Spindle fibers form Metaphase I Tetrads align randomly at the middle of the cell This random alignment is called independent assortment Anaphase I Homologous chromosomes are pulled to opposite poles Sister chromatids remain attached Telophase I & Cytokinesis Cell divides into two haploid cells Each chromosome still consists of two sister chromatids Meiosis II 1. Prophase II Chromosomes (still made of sister chromatids) cond...