variation & change
DESCRIPTION
Variation & Change. Evolution = changes in the morphology or behavior of species over time Macroevolution = irreversible large scale changes (e.g. speciation and extinction) that occur over thousands of generations Microevolution = reversible small scale changes within populations. - PowerPoint PPT PresentationTRANSCRIPT
Variation & ChangeEvolution = changes in the morphology or behavior of
species over time
Macroevolution = irreversible large scale changes (e.g. speciation and extinction) that occur over thousands of generations
Microevolution = reversible small scale changes within populations
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Mystery PhenomenonPart 1
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Butterfly & Moth Collecting
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Butterfly & Moth Collecting
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Theatrum Insectorum (1634) 1st British insect book to include moths
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Biston betularia f. typica
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1766 First careful description of
Biston betularia
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Biston betularia f. typica on lichened tree trunk
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Distribution Map of Biston betularia
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1840 Distribution Map
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DiscoveryBiston betularia f. carbonaria
1848 - Manchester, UK
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London
Manchester
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James W. Tutt
(1858-1911)
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Sightings of Biston betularia f. carbonaria
By 1860
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Sightings of Biston betularia f. carbonaria
By 1870
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Sightings of Biston betularia f. carbonaria
By 1880
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Sightings of Biston betularia f. carbonaria
By 1890
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Sightings of Biston betularia f. carbonaria
By 1900
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Sightings of Biston betularia f. carbonaria
By 1910
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Sightings of Biston betularia f. carbonaria
By 1920
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Sightings of Biston betularia f. carbonaria
By 1930
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Sightings of Biston betularia f. carbonaria
By 1940
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Sightings of Biston betularia f. carbonaria
By 1950
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Distribution of Biston betularia ca. 1950
Frequency map of Biston betularia
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London
Manchester
Glasgow
Industrial Revolution Manchester: surroundings
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Industrial RevolutionManchester
18431950s
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Industrial Revolution
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Mystery Phenomenon:
Why is the dark form becoming more common in areas downwind of
manufacturing centers?
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