BIOL 304 Lecture Notes - Lecture 32: Wild Type, Cambrian Explosion, Broccoli
5 Mar 2018
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Language large number of letters that can make combinations of words that have many different meanings. Complexity & evolvability: vs genetics: small number of letters (4), 20 amino acids, 1000s-100,000s of proteins, protein-protein, protein-gene, gene-gene interactions = syntax of biology, more complex syntax in biology than grammar. Dar(cid:449)i(cid:374)"s phyloge(cid:374)y: constraints to fidelity of passing on information more complex makes it harder to properly pass on, etc. Increased mutation rates increases variation and evolvability of traits. Toward complexity: goswami paper read introduction, discusses modules, variation and evolvability. Evolving stable networks sole et al. , 2003: 2 genes & 2 hormones, all in silico (meaning on a computer, one hormone is a repressor, one is an activator, hormones allow the genes to talk to each other. Cambrian explosion: associated with a huge genome duplication, simple fractal morphology now able to function in a much larger genome. Increasing genome may have facilitated an explosion of body plans.
