State Goal Content
How variations provide material for natural selection, The role of geographic isolation in speciation, The importance of environment in selecting adaptations, Applications (pesticide and antibiotic resistance), Discuss the evolutionary selection of resistance to antibiotics and pesticides in various species
Written Explanation
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Lessons and Lesson Plans
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Activities
Antibiotic Attack
Pictures & Graphics
Charles Darwin. Caricature of the British naturalist Charles Darwin (1809-1892), proposer of the theory of evolution with natural selection as the driving force behind it. He is pictured dragging a long, hairy arm along the ground behind him, in the manner of an ape. When his theory was published, in On the Origin of Species By Means of Natural Selection (1859), it caused a storm of controversy as it flew in the face of the widely accepted belief that species were created as they now are by a divine creator (ie God). Although most scientists now accept evolution and natural selection based on overwhelming evidence, some controversy remains surrounding the issue.1
Moth camouflage. Two colours of peppered moth (Biston betularia) on the bark of a tree. These two forms, light (upper left) and dark (lower right), are a famous example of natural selection. The light coloured form of the moth is most common in nature, providing camouflage on lichen-covered tree bark. In 1840s England, industrial pollution turned trees a sooty black. The darker moth (occurring as a genetic mutation) was better camouflaged on sooty trees, as seen here, and within 50 years became the commonest form. The light moth was seen and preyed upon by birds. See image Z355/585 for the moths on a light background.2
Animations, Movie Clips & Sounds
BrainPop - Natural Selection
BrainPop - Human Evolution
BrainPop - Antibiotic Resistance
Bacterial Conjugation and Antibiotic Resistance
Essential Questions
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Test Items
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