Biology / Unit 8 Bio 1645 short lesson, about 20 seconds
Darwin, Wallace, and the Path to 1859
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The idea
Charles Darwin and Alfred Russel Wallace independently reasoned to natural selection, jointly presenting the idea in 1858 before Darwin's 1859 On the Origin of Species.
In practice
Darwin's 1831–1836 Beagle voyage, including stops in the Galápagos, supplied observations his natural-selection argument later drew on.
Where people slip
The Beagle voyage did not deliver the theory — Darwin argued it two decades before publishing, once Wallace reached it.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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