Biology 1002B Lecture Notes - Lecture 5: Opsin, Longwave, Color Vision
20 Apr 2016
School
Department
Course
Professor
Document Summary
There is no example of anything that uses opsins and the retinal and the retinal is different. We can change retinal by adding a new enzyme that changes retinal at the very end. Dichromatic subjects are way more successful in this experiment. Trichromats had a hard time because so much colour was camouflaging the shapes. For certain tasks dichromats have a selective advantage. Timing of continental drift coincides very well with the evolution of colour vision in primates. Early eyes developed 135 mya. All of the continents have living things that have eyes (lots of rhodopsins) The continents moved because the plate moved (plates move about 2 inches per year) In south america (new world) female monkeys have better colour discrimination than any males. Humans and chimpanzees shared a common ancestor about 7- 9 mya. [lecture 24: evolution of eye and colour vision ii]
