Author: Freesciencelessons via YouTube
Go to Source

In this video, we look at evolution by natural selection. First we explore the idea of selection pressures and the effect of these on organisms. We then look at the process of natural selection. Finally, we look at how natural selection has lead to the development of antibiotic-resistant bacteria and pesticide-resistant insects.

Image credits:

Polyphemus Moth
https://commons.wikimedia.org/wiki/File:Antheraea_polyphemus_-_Polyphemus_Moth.jpg
Ilona Loser, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Dolphin
https://commons.wikimedia.org/wiki/File:Dolphind.jpg
sheilapic76, CC BY 2.0 https://creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Marram Grass
https://commons.wikimedia.org/wiki/File:Marram_Grass,_Goswick_Sand_Dunes_-_geograph.org.uk_-_2135294.jpg
Marram Grass, Goswick Sand Dunes by Mick Garratt, CC BY-SA 2.0 https://creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons

Myoxocephalus scorpius PAQ
https://commons.wikimedia.org/wiki/File:Myoxocephalus_scorpius_PAQ.jpg
https://upload.wikimedia.org/wikipedia/commons/b/b8/Myoxocephalus_scorpius_PAQ.jpg

Placental mole
https://en.wikipedia.org/wiki/File:ScalopusAquaticus.jpg#file
Kenneth Catania, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Moorland stream
https://commons.wikimedia.org/wiki/File:Moorland_Stream_-_geograph.org.uk_-_2350455.jpg
Moorland Stream by Philip Platt, CC BY-SA 2.0 https://creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons

Wolf

https://commons.wikimedia.org/wiki/File:Front_view_of_a_resting_Canis_lupus_ssp.jpg
Gary Kramer, Public domain, via Wikimedia Commons

Rabbit with myxomatosis
https://commons.wikimedia.org/wiki/File:Rabbit_with_Myxomatosis_1(RLH).jpghttps://commons.wikimedia.org/wiki/File:Rabbit_with_Myxomatosis_1(RLH).jpg
Richard Harvey, CC BY 3.0 https://creativecommons.org/licenses/by/3.0, via Wikimedia Commons

Snowy moor
https://commons.wikimedia.org/wiki/File:A_snowy_Rannoch_Moor_-_geograph.org.uk_-_1638676.jpg
Dave Fergusson / A snowy Rannoch Moor

Desert
https://commons.wikimedia.org/wiki/File:Desert_(9).jpg
Mostafameraji, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Charles Darwin
https://commons.wikimedia.org/wiki/File:Charles_Darwin_aged_51.jpg
Messrs. Maull and Fox, Public domain, via Wikimedia Commons

Snowshoe 1
https://commons.wikimedia.org/wiki/File:MK04608_Snowshoe_Hare_(Banff).jpg
Martin Kraft, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Snowshoe 2
https://commons.wikimedia.org/wiki/File:Snowshoe_hare_(52924634241).jpg
USFWS Midwest Region from Midwest Region, United States, Public domain, via Wikimedia Commons

Snowshoe 3
https://commons.wikimedia.org/wiki/File:Lepus_americanus_5459.JPG
Walter Siegmund, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Snowshoe 4
https://commons.wikimedia.org/wiki/File:Snowshoe_Hare_(Lepus_americanus)_-_Gros_Morne_National_Park,_Newfoundland_2019-08-20.jpg
Ryan Hodnett, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Snowshoe 5
https://commons.wikimedia.org/wiki/File:A_snowshoe_hare_(b35f0212-39a8-4d9b-bb2f-0cbfbac39213).jpg
English: Mary Lewandowski, Public domain, via Wikimedia Commons

Snowshoe 6
https://commons.wikimedia.org/wiki/File:SNOWSHOE_HARE_(Lepus_americanus)_(8-20-13)_stunner_c_g,_n-w_conejos_co,_co_(3)_(9592430167).jpg
ALAN SCHMIERER, CC0, via Wikimedia Commons

Canada Lynx
https://en.wikipedia.org/wiki/File:Canada_lynx_by_Michael_Zahra_(cropped).jpg
Michael Zahra, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Bobcat
https://commons.wikimedia.org/wiki/File:Bobcat_at_Columbus_Zoo_Boo.jpg
Becker1999 (Paul and Cathy), CC BY 2.0 https://creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Marten
https://commons.wikimedia.org/wiki/File:Newfoundland_Pine_Marten.jpg
Bailey Parsons, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Colorado potato beetle
https://en.wikipedia.org/wiki/File:Colorado_potato_beetle.jpg
Scott Bauer USDA ARS

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

Go to Source