A Level Biology Revision "Stabilising Selection and Directional Selection"

A Level Biology Revision "Stabilising Selection and Directional Selection"

????

In this video, we look at stabilising selection and directional selection. First we explore stabilising selection, using the example of birth weight in humans. We then look at directional selection, including the presence of antibiotic resistance. Image credits: Basketball https://commons.wikimedia.org/wiki/File:Spain_national_basketball_team_2011_01.jpg Christopher Johnson, CC BY-SA 2.0 https://creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons Bird https://commons.wikimedia.org/wiki/File:Fringilla_coelebs_chaffinch_male_edit2.jpg MichaelMaggs � Edited (sharpened, down-sampled, contrast corrected, noise removed) by: Arad, CC BY-SA 2.5 https://creativecommons.org/licenses/by-sa/2.5, via Wikimedia Commons Staph A https://commons.wikimedia.org/wiki/File:Staphylococcus_aureus_VISA_2.jpg Content Providers(s): CDC/ Matthew J. Arduino, DRPH Photo Credit: Janice Haney Carr, Public domain, via Wikimedia Commons

Advertisement

LEAVE YOUR COMMENT

More Biology Videos