Mechanisms of Evolution (Microevolution & Macroevolution) | Evolution | CSIR Dec 2026 | Lec 2 | IFAS

Mechanisms of Evolution (Microevolution & Macroevolution) explained with clear concepts and exam-focused approach. Master Mechanisms of Evolution, Microevolution, and Macroevolution for CSIR NET Life Science, GATE & DBT. Covers key concepts, geological eons, origin of life, endosymbiosis, and evolutionary milestones. Perfect for aspirants targeting CSIR Dec 2026 with high-weightage topics and exam-oriented clarity. 🔥 Join India's Best Life Science Coaching - IFAS Online! 🔥 Live Online Batch: Super Emotion Batch 7.7 - Starts on 8 June 2026 🔥 Recorded Online Batch: Revolution Batch 7.7 from Live Batch Completed on 16 May 2026 🔥 New Crash Course for CSIR NET July 2026 Starts on Starts on 8 June 2026 ━━━━━━━━━━━━━━━━━━━━━━━━━ ⏳ Lecture Timeline: [00:00:00] – Introduction of Mechanisms of Evolution [00:06:47] – Recap: Chemical Evolution & Protocell [00:07:32] – Archean Eon: 4 to 2.5 BYA [00:15:00] – Earliest Prokaryotes: Anaerobic Heterotrophs [00:17:05] – First Nutrition Mode: Anaerobic Chemoheterotrophy [00:19:05] – Stromatolites: Oldest Fossils (3.5 BYA) [00:21:08] – Oxygenic Photosynthesis & BIFs [00:25:27] – Anoxygenic Photosynthesis First [00:26:34] – Cyanobacteria: Oxygenic Photosynthesis [00:27:24] – Oxygen Revolution: Environmental Shift [00:30:48] – Aerobe Survival: SOD & Catalase [00:35:51] – Proterozoic Eon: 2.5 BYA to 541 MYA [00:36:22] – First Eukaryotic Cell: 2.5 BYA [00:38:20] – Ancestral Eukaryote: Anaerobic Predator [00:40:04] – Loss of Cell Wall & Membrane Invagination [00:47:10] – Endosymbiosis Theory: Lynn Margulis [00:56:29] – Mutual Benefit: O₂ Detox & ATP [00:57:17] – Primary Endosymbiosis: Chloroplast Origin [00:58:25] – Green Algae, Red Algae & Charophytes [01:01:15] – Secondary Endosymbiosis: Euglena, Brown Algae [01:04:32] – Origin of Multicellularity [01:06:07] – Ediacaran Biota: Earliest Animals [01:07:22] – Phanerozoic & Session Summary [01:14:38] – Complete Session (Mechanisms of Evolution) ━━━━━━━━━━━━━━━━━━━━━━━━━ 📖 Topics Covered in This Lecture: • Microevolution & Macroevolution Concepts • Geological Time Scale: Hadean to Phanerozoic • Origin of Prokaryotes & LUCA • Diversification of Nutrition & Oxygen Revolution • Endosymbiosis: Primary & Secondary • Origin of Eukaryotes, Multicellularity & Three Domains ━━━━━━━━━━━━━━━━━━━━━━━━━ 📚 Lecture Summary: IFAS Expert Faculty covers Mechanisms of Evolution: microevolution & macroevolution, geological timeline (Hadean-Phanerozoic), LUCA, origin of prokaryotes, oxygen revolution, BIF, endosymbiotic theory, origin of eukaryotes & multicellularity. Master CSIR NET Life Science concepts for June 2026. Watch now! ━━━━━━━━━━━━━━━━━━━━━━━━━ 🎯 Why IFAS is India's No. 1 Choice? (Our Results Speak): We have consistently produced Top Rankers in CSIR NET Life Sciaences. 🏆 CSIR NET Dec 2025: 4500+ Selections (AIR 3, 8, 9, 9, ...) 🏆 CSIR NET June 2025: 4100+ Selections (AIR 1, 2, 6, ...) 🏆 CSIR NET Dec 2024: 3000+ Selections (AIR 5, 6, 7, 8...) 🏆 CSIR NET June 2024: 2000+ Selections (AIR 3, 10, 13...) 🏆 CSIR NET Dec 2023: 1200+ Selections (AIR 2, 4, 5...) 📄 View Detailed Result Sheet: 📌 https://drive.google.com/file/d/1THh6... 🎯 Target Audience: This video is highly beneficial for students preparing for: 🚀 CSIR NET Life Science (June 2026) 🚀 GATE Biotechnology (BT) & Life Sciences (XL) 🚀 DBT JRF 🚀 MH SET, WB SET, K SET, & other State Eligibility Tests 🚀 M.Sc. & Ph.D. Entrance Exams 🔗 Important Links: 🌍 Visit our Website: https://ifasonline.com/csir-net/life-... 📞 Contact for Queries: 9172266888 📲 WhatsApp: https://api.whatsapp.com/send?phone=9... 🔥 Qualification Prediction (Free Tool): https://ifasonline.com/QualificationP... 📘 Get Detailed Free Counseling: https://ifasonline.com/csir-net/life-... 📲 Download IFAS App: 📌 Android: https://play.google.com/store/apps/de... 📌 Ios: https://apps.apple.com/us/app/ifas/id... 📘 Buy CSIR NET Life Science Books: 📌 https://ifasonline.com/csir-net/life-... 🔥 Our Social Media Platforms: 📌 Telegram: https://t.me/NET_GATE_SET_LifeScience... 📌 Instagram:   / csir_net_life_science_ifas   📌 Facebook:   / ifasls   📌 WhatsApp: https://api.whatsapp.com/send?phone=9... 💡 Stay Updated, Stay Ahead! This video has following search items mechanismsofevolution #microevolution #macroevolution #csirnetlifescience #geologicaltimescale #hadean #phanerozoic #prokaryotes #luca #oxygenrevolution #secondaryendosymbiosis #originofeukaryotes #multicellularity #threedomains