Darwinism/Natural Selection & Sexual Selection. CSIR NET, IIT JAAM,CUET UG/PG,NEET,12th. скачать в хорошем качестве

Darwinism/Natural Selection & Sexual Selection. CSIR NET, IIT JAAM,CUET UG/PG,NEET,12th.

In this lecture, we dive deep into the core concepts of Darwinism, Natural Selection, and Sexual Selection. This is the 5th class in our Evolution and Behavior series, designed specifically for students preparing for CSIR NET, IIT JAM, CUET UG/PG, NEET, and 12th Board exams. We explore Charles Darwin’s historic voyage on the HMS Beagle, his observations of Darwin’s Finches on the Galápagos Islands, and how he formulated the Theory of Natural Selection alongside Alfred Russel Wallace. We also discuss the often-misunderstood concept of Sexual Selection and why certain "over-specialized" traits exist in nature. What You Will Learn: The life and intellectual influences of Charles Darwin. Insights from the Galápagos Islands & Adaptive Radiation. The 5 Main Postulates of Natural Selection. Real-world examples: Peppered Moth & Antibiotic Resistance. Understanding Sexual Selection: Why Peacocks have long tails. Criticisms of Darwinism and the rise of Neo-Darwinism. 00:00 Intro & Darwin’s Early Life 01:47 The Voyage of HMS Beagle 02:52 Findings from Galápagos Islands 04:07 What is Adaptive Radiation? 04:23 Influences: Lyell & Malthus 06:47 Alfred Russel Wallace & The Wallace Line 08:46 Joint Publication 1858 09:32 Postulates: Overproduction & Struggle 10:19 Survival of the Fittest 11:03 Descent with Modification 12:30 Peppered Moth (Industrial Melanism) 14:46 Example: Green & Brown Beetles 16:02 Antibiotic Resistance in Bacteria 16:40 What is Sexual Selection? 17:37 Examples: Peacock Tail & Elephant Tusks 19:32 Criticisms of Darwinism 22:04 Hugo de Vries & Mutation Theory 22:51 Neo-Darwinism: The Modern Synthesis Visual Credits Public Domain (No Copyright) Charles Darwin Portrait (1878): https://commons.wikimedia.org/wiki/Fi... Alfred Russel Wallace Portrait (c.1895): https://commons.wikimedia.org/wiki/Fi... HMS Beagle in the Straits of Magellan: https://commons.wikimedia.org/wiki/Fi... Creative Commons (Attribution Required) Voyage of the Beagle Map: by Sémhur. Licensed under CC BY-SA 4.0 (https://creativecommons.org/licenses/...) Link: https://commons.wikimedia.org/wiki/Fi... Special License (GNU/Copyleft) Loxodonta africana (African Bush Elephant): by Muhammad Mahdi Karim. Licensed under GNU Free Documentation License (https://www.gnu.org/licenses/fdl-1.2....) Link: https://commons.wikimedia.org/wiki/Fi...