Natural Selection: Stabilizing, Disruptive, and Directional Selection скачать в хорошем качестве

Natural Selection: Stabilizing, Disruptive, and Directional Selection

In this video, we'll look at three types of natural selection, a mechanism of evolution where individuals that are better adapted to their environment are more likely to survive and reproduce, passing on their helpful traits, and changing the population over time. #naturalselection #stabilizingselection #directionalselection #disruptiveselection 00:00 Intro - SELECTIVE PRESSURES drive natural selection 00:32 NATURAL SELECTION REQUIRES - heritable variation in a population where individuals don't reproduce equally. Some advantageous variations will allow individuals to reproduce more, passing those adaptations to the next generation. 01:13 STABILIZING SELECTION - individuals with intermediate/average phenotype are the most fit, they are most likely to survive and reproduce; selection against extreme phenotypes 02:29 DISRUPTIVE SELECTION - (also called diversifying selection) individuals on either end of phenotypic extremes are most fit; selection against intermediate phenotypes 03:31 DIRECTIONAL SELECTION - one extreme phenotype is the most fit 04:19 NATURAL SELECTION IS JUST ONE EVOLUTIONARY MECHANISM - other events can also change a population's genetic makeup over time New videos are always on the way - subscribe so you don't miss any of my biology tips :) Connect with me! Tutoring information: http://www.yourotherbioprof.com Instagram: instagram.com/yourotherbioprof