Biology 3316A/B Lecture 4:
20 Feb 2019
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Set up by howard hughes (was richest person in world: decided to give money to medical research, breakthrough in embryotic development and development in general. Identical twins get some mystifying results when they put 5 dna ancestry kits to the test. Should be identical: reason to doubt these tests. Cre-lox system: how to knock out or knock in a gene specifically in one region, using viral elements to keep things silent, until you turn things on. Signal transduction cancer tales from a fly"s eye to a worm"s vulva. Fly"s eye and worms" vulva: diff b/w us and flies is about 800 million years of divergence, elegans, and prob another 40-50 million years if you add in the divergence b/w when worms showed up. So why: we prob have more processing of transcripts, leading to the million proteins in individual cells. R7 photoreceptor detects uv light: red or white eyes of drosophila been studying drosophila for about 100 years.
