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GCSE Biology Revision "Variation"

For thousands of questions and detailed answers, check out our GCSE workbooks https://www.amazon.co.uk/Dr-Shaun-Don... Great deals on workbooks for schools https://www.freesciencelessons.co.uk/... In this video, we look at the causes of variation in a population. We then look at an example where a mutation caused a rapid change in the phenotype of a population. This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Biology. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks. Image credits: Bill Russell "https://commons.wikimedia.org/wiki/Fi... Pete Souza [Public domain], via Wikimedia Commons" Portrait_of_a_Persian_lady_in_Iran,_10-08-2006 By Hamed Saber from Tehran, Iran - Persian Beauty, CC BY 2.0, https://commons.wikimedia.org/w/index... Red haired siblings "https://commons.wikimedia.org/wiki/Fi... By Dpulitzer (Own work) [CC BY-SA 3.0 (https://creativecommons.org/licenses/...)], via Wikimedia Commons" Lalit_Narayan_Jha "https://commons.wikimedia.org/wiki/Fi... By PawanJha91 (Own work) [CC BY-SA 4.0 (https://creativecommons.org/licenses/...)], via Wikimedia Commons" 1032px-FFヤロでの高橋一輝 "https://commons.wikimedia.org/wiki/Fi... By 山崎秀太 (Own work) [CC BY-SA 4.0 (https://creativecommons.org/licenses/...)], via Wikimedia Commons" Young blonde man "https://commons.wikimedia.org/wiki/Fi... By User:Pja25 (Cropped from Image:Two blond males.jpg) [Public domain], via Wikimedia Commons" Pink hydrangea "https://commons.wikimedia.org/wiki/Fi... I, MJJR [CC BY 2.5 (http://creativecommons.org/licenses/b...)], via Wikimedia Commons" Blue hydrangea By Raul654, CC BY-SA 3.0, https://commons.wikimedia.org/w/index... Two cricketers By BeingFaridKhan - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index... Eight dogs By carterse - Eight is still enough dogs, CC BY-SA 2.0, https://commons.wikimedia.org/w/index... Rabbit By Ann Harrison, CC BY-SA 2.0, https://commons.wikimedia.org/w/index... People talking "https://commons.wikimedia.org/wiki/Fi... By Mghali76 (Own work) [CC BY-SA 3.0 (https://creativecommons.org/licenses/...)], via Wikimedia Commons" Music credit: Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/...) Source: http://incompetech.com/music/royalty-... Artist: http://incompetech.com/