CAS PS 241 Lecture Notes - Lecture 5: Heritability, Synaptic Pruning, Color Vision
10 Jan 2017
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Document Summary
Synaptic pruning brain initially over-produces synapses, connections between neurons. Genotype = unique genetic combos of the individual. Phenotype = forms and behaviors of the organism. Genotype => phenotype, the two have an interesting interaction with one another. Twin studies : variation due to genes and variation due to environment does not equal. Total variation: non-shared environment is also a factor = kids trying to be different than each other, try to find their own niche, parents treat kids differently, different life experiences. # of fingers, having five fingers is genetically driven, 99% caused by genes and. Seeing contrast, representing lines, representing shadows. Seeing contrast, representing lines, representing shadows, picking out shapes. What an infant sees at different points in dev"t. Focus is behind the retina: blurry. The eye gets bigger until the image is in focus. Eye growth is determined by visual input: stages of eye dev"t nearly spherical.
