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Variation Variation

Variation - PowerPoint Presentation

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Variation - PPT Presentation

amp Change Evolution changes in the morphology or behavior of species over time Macroevolution irreversible large scale changes eg speciation and extinction that occur over thousands of generations ID: 331430

1900 betularia biston 2000 betularia 1900 2000 biston 1600 1800 1700 carbonaria sightings manchester industrial distribution map amp london

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Slide1

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

1Slide2

Mystery Phenomenon

Part 12Slide3

Butterfly & Moth Collecting

17001800

1900

2000

1600

3Slide4

Butterfly & Moth Collecting

1700

1800

1900

2000

1600

Theatrum

Insectorum

(1634)

1

st

British insect book to include moths

4Slide5

Biston betularia f. typica

1700

1800

1900

2000

1600

1766

First

careful description of

Biston betularia

5Slide6

Biston betularia f.

typica on lichened tree trunk

6Slide7

Distribution Map of

Biston betularia 1700

1800

1900

2000

1600

1840 Distribution Map

7Slide8

Discovery

Biston betularia f. carbonaria

1848 - Manchester, UK

1700

1800

1900

2000

1600

8

London

ManchesterSlide9

1700

1800190020001600

James W.

Tutt

(1858-1911)

9Slide10

Sightings of

Biston betularia f. carbonaria

By 1860

1700

1800

1900

2000

1600

10Slide11

Sightings of

Biston betularia f. carbonaria

By 1870

1700

1800

1900

2000

1600

11Slide12

Sightings of

Biston betularia f. carbonaria

By 1880

1700

1800

1900

2000

1600

12Slide13

Sightings of

Biston betularia f. carbonaria

By 1890

1700

1800

1900

2000

1600

13Slide14

Sightings of

Biston betularia f. carbonaria

By 1900

1700

1800

1900

2000

1600

14Slide15

Sightings of

Biston betularia f. carbonaria

By 1910

1700

1800

1900

2000

1600

15Slide16

Sightings of

Biston betularia f. carbonaria

By 1920

1700

1800

1900

2000

1600

16Slide17

Sightings of

Biston betularia f. carbonaria

By 1930

1700

1800

1900

2000

1600

17Slide18

Sightings of

Biston betularia f. carbonaria

By 1940

1700

1800

1900

2000

1600

18Slide19

Sightings of

Biston betularia f. carbonaria

By 1950

1700

1800

1900

2000

1600

19Slide20

Distribution of Biston betularia

ca. 1950

Frequency map of

Biston betularia

20

London

Manchester

GlasgowSlide21

Industrial Revolution

Manchester: surroundings1820

1852

21Slide22

Industrial Revolution

Manchester 1843

1950s

22Slide23

Industrial Revolution

23Slide24

Mystery Phenomenon:

Why is the dark form becoming more common in areas downwind of manufacturing centers?24