Biology 1002B Lecture Notes - Lecture 25: Chromate And Dichromate, Gene Duplication, Continental Drift
7 Apr 2016
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Document Summary
Evidence that eyes have evolved 40 ime independently o o. The path light takes in the eye is very diferent and contain diferent issues. Evidence for convergence: funcionally similar (but do it diferently) but evolved separately. Made up of proteins (crystallines): homolgous to heat shock proteins. Pax6 transcripion factor provides evidence of homology o o o. Evolved very early on, found in all animals with eyes. Used in the development of eyes (essenial for eye development) Biophysical basis of colour vision o o o o o. There are three types of cone cells which difer in the type of rhodopsin they have. This is trichromaic vision (also mono- and di-) Diferent types of opsins align very well (very similar) Slight to changes to the protein could cause changes to the reinal. This could lead to slight changes as well. The gene coding for the sws opsin protein is located on chromosome 7.
