PSYC 3100 Lecture : 3. Sept. 26.docx
16 Sep 2013
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Occurs about 1 in a millions times. Phenotype shapes genotype: three blind mice, farmer"s wife cuts off their tails, lamarck is saying that the next generation of mice would be born without their tails. His theory got a lot of attention from the soviet union. Obligate traits: traits that are unaffected by the environment, resist environmental input. Facultative traits: traits that have a genetic basis, but are very responsive to environmental change. Sun tanning (starts to look like epigenetics) Epigenetics: affect gene expression without changing the genes themselves, the epigenome turns these genes on or off. It is the epigenome that is effected by the environment. Genes are not designed to get you sick, i. e. coding for a certain disease. Mother"s diet effects the colour of the baby"s fur and the diseases it is susceptible to. This environmental factor is in the parent"s life, not the baby"s. Genetics influences culture: lactose intolerance is supposedly genetically linked.
