The driving force for molecular evolution of translation Chimps Face Death Like Humans Do Seeing red? The mind-bending power of colour “Human vision is trichromatic,” says Prof Andrew Stockman, a UCL colleague of Dr Lotto’s. “Like a colour television.” We have three different colour receptors, cones, in our eyes, each designed to pick up different wavelengths of light. This is the product of billions of years of evolution. “The whole point of colour vision is not to inspire poets, but to allow contrast detection,” says Russell Foster, professor of circadian neuroscience at the University of Oxford. Unlike birds, though, mammals are descended from small, timid creatures who scurried around avoiding dinosaurs – and, crucially, were nocturnal. Human beings have 3 colour detectors while Mantis shrimps, above, have 12 (Stephen Frink collection/Alamy) None the less, the wavelength of the light around us has affected us since the dawn of life, and it still does. But earlier, we saw that red made us perkier, and blue calmed us down. But we’re not uniformly sensitive to these illusions; again, context matters.
Peppered Moth Simulation Name:______________________________________________ Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. Introduction: Charles Darwin accumulated a tremendous collection of facts to support the theory of evolution by natural selection. The economic changes known as the industrial revolution began in the middle of the eighteenth century. Instructions: Click the link below to read more information on Kettlewell's study of moths. After 5 minutes record the % of dark moths and light moths - you will need this information later. Peppered Moth Simulation at peppermoths.weebly.com Data and Analysis Read the background information and answer the questions as you go. Life Cycle of the Peppered Moth 1. 2. 3. 4. 5. 6. Impact of Pollution 7. 8. 9. 10. 11. 12. Kettlewell's Experiments 13. 14. 15. 16. 17. 18. 19. 20. Birdseye View 21. Final Analysis 22. 23. 24.
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