1. Selection in Action: Pesticide Resistance:

2. Selection in Action: Pesticide Resistance:

3. Natural Selection in Action:
Pesticide Resistance.

6. Round-up resistant Giant Ragweed (Ambrosia)

7. Round-up resistance in Palmer Amaranth (pigweed) growing in Soya bean field.

8. Selection in Action: Industrial Melanism.

9. Industrial Melanism Peppered Moth (Biston betularia)

10. Peppered Moth (Biston betularia) collection.

14. Henry Bernard Davis Kettlewell (1907-1979)
Henry Bernard Davis Kettlewell ( ) was an outstanding lepidopterist and geneticist, best known for his work on industrial melanism in the Lepidoptera which illustrates evolution in action. He is also well known as an enthusiastic field worker and as a popularizer of science, and was co-founder of the Rothschild-Cockayne-Kettlewell Collection of Lepidoptera (now National Collection RCK) in the British Museum of Natural History. A Fellow of Wolfson College from its inception, he bequeathed his correspondence and papers to the College. This site was primarily set up to make available the list of Kettlewell's correspondence. It is also hoped that it will provide a focus for the study of his life and work. Comments and suggestions are always welcome, particularly for other web based resources that can be linked to this site
Henry Bernard Davis Kettlewell ( )

15. Henry Bernard Davis Kettlewell (1907-1979).

16. Since 1960s cleaning up of the environment.

19. Selection in Action: Guppies Trinidad / Tobago

20. Natural selection in Action:
Caryl Haskins (1940s) explored how ecological conditions influenced color variations among Trinidad’s/Tobago guppy populations.

21. Guppies of Trinidad and Tobago.

24. Matured late, greater size, brighter color.
Mature early, smaller size, drap

25. 10 generation lab test.
John Endler (1970s).