Alfred Russel Wallace's Contribution to the Theory of Evolution

The video discusses Alfred Russel Wallace's contributions to the theory of evolution, highlighting his independent proposal of natural selection alongside Darwin. Wallace is credited with discovering the use of color in plants and animals to deter predators, a trait evolved through natural selection. The video also explains speciation, where populations of a species become so different due to geographic isolation that they can no longer interbreed, leading to the formation of new species.

Who independently proposed a theory of evolution by natural selection around the same time as Darwin?

• Gregor Mendel

• Thomas Huxley

• Alfred Russel Wallace

• Jean-Baptiste Lamarck

What characteristic did Wallace discover that some plants and animals use to deter predators?

• Use of color

• Mimicry

• Camouflage

• Nocturnal behavior

What is speciation?

• The adaptation of a species to a new environment

• The migration of a species

• The formation of a new species

• The extinction of a species

What often causes two populations of the same species to become so different that they can no longer interbreed?

• Climate change

• Geographical isolation

• Predator pressure

• Dietary changes

Which of the following is NOT a physical feature that can lead to geographical isolation?

• A new forest

• A mountain range

• A seasonal migration

• A river