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
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Christopher Johnson, CC BY-SA 2.0 https://creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons
Bird
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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
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Content Providers(s): CDC/ Matthew J. Arduino, DRPH Photo Credit: Janice Haney Carr, Public domain, via Wikimedia Commons
I don't think this is part of the OCR spec, it doesn't say this
@h-pp9uo Says:
What about dispersive selection?Its shown up before on papers for aqa.
Thanks for your amazing videos a good explanation just wandering about this query
@hemragulyusuf4069 Says:
Currently cramming 😍😍😍😍
@yasminh Says:
do you think ill be allowed a calculator with a freesciencelessons sticker on it in the exam or should I put the sticker on my calc case instead
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