GCSE Science Revision Biology "Variation"

Find my revision workbooks here: https://www.freesciencelessons.co.uk/workbooks

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.

Image credits:

Bill Russell "https://commons.wikimedia.org/wiki/File%3ABill_Russell_in_the_Green_Room.jpg

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.php?curid=3885047

Red haired siblings "https://commons.wikimedia.org/wiki/File%3ARed-haired_Siblings.jpg

By Dpulitzer (Own work) [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons"

Lalit_Narayan_Jha "https://commons.wikimedia.org/wiki/File%3ALalit_Narayan_Jha.jpg

By PawanJha91 (Own work) [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons"

1032px-FFヤロでの高橋一輝 "https://commons.wikimedia.org/wiki/File%3AFF%E3%83%A4%E3%83%AD%E3%81%A7%E3%81%AE%E9%AB%98%E6%A9%8B%E4%B8%80%E8%BC%9D.jpg

By 山崎秀太 (Own work) [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons"

Young blonde man "https://commons.wikimedia.org/wiki/File%3AYoung_blond_man.jpg

By User:Pja25 (Cropped from Image:Two blond males.jpg) [Public domain], via Wikimedia Commons"

Pink hydrangea "https://commons.wikimedia.org/wiki/File%3AHydrangea_macrophylla_01.jpg

I, MJJR [CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons"

Blue hydrangea By Raul654, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=127207

Two cricketers By BeingFaridKhan - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=26247494

Eight dogs By carterse - Eight is still enough dogs, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=39528172

Rabbit By Ann Harrison, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=14186205

People talking "https://commons.wikimedia.org/wiki/File%3AAsma5.jpg

By Mghali76 (Own work) [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons"

Music credit:

Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/?keywords=deliberate+thought
Artist: http://incompetech.com/