Biology teacher

 Meiosis I Mind Map for NEET | Prophase I Stages Explained Simply Mind map of Meiosis I showing all stages of Prophase I and key events for NEET revision.   - Dr.Sanjaykumar Pawar  🌿 MEIOSIS I (Reduction Division) – Easy Notes 🔬 PROPHASE I (Longest and most important stage) 👉 Most complex stage of meiosis 👉 Divided into 5 sub-stages: 1️⃣ Leptotene Chromosomes start becoming visible under microscope They become long, thin, and thread-like Chromosomes begin condensation (coiling & thickening) 📌 Key point: “Lepto = thin threads” 2️⃣ Zygotene Homologous chromosomes pair together This pairing is called synapsis Paired chromosomes are called bivalents Synaptonemal complex forms (protein structure holding pairs together) 📌 Key point: “Zygo = pairing” 3️⃣ Pachytene Chromosomes become shorter and thicker Each bivalent has 4 chromatids → called tetrad Crossing over occurs here Exchange of genetic material between non-sister chromatids Helps...