Understanding Meiosis Basics
Ever wonder how babies get a mix of traits from both parents? It all starts with meiosis, a special cell division process that creates gametes (sex cells like sperm and eggs). Unlike mitosis which creates identical cells, meiosis splits genetic information.
Your body has two types of cells based on chromosome count. Diploid cells (2N) contain paired chromosomes—one from each parent—and make up most of your body cells. In humans, diploid cells have 46 chromosomes. Haploid cells (N) contain just half the chromosomes (23 in humans) and are found only in sex cells.
Meiosis occurs in two consecutive divisions: Meiosis I and Meiosis II. When complete, one diploid cell transforms into four haploid cells. Before meiosis begins, cells go through interphase where DNA is replicated during the S phase, surrounded by growth phases (G₁ and G₂).
💡 Think of meiosis like dealing cards: your body starts with a full deck (46 chromosomes), but needs to give your future children only half the deck (23 chromosomes) so when combined with your partner's half-deck, they'll have a complete set!
