PSY355H5 Lecture Notes - Lecture 4: Environmental Modification Convention, Epistasis, Genomic Imprinting
Document Summary
Lecture 4 september 27, 2017: genes manifest differently in society: Introduction: for example: 2 highly aggressive and genetically identical children raised in two different environments, one raised in a low ses env, not much education, etc. Conviction: one raised in a high ses env, enrolled in boxing and excelled = sports -> Recognition: genes do not have deterministic effects: gene and environment work together, genotype environment interaction (in graph: lines are not parallel, see lecture 3 notes, epigenesis (methylation of dna, alteration of histone structure) The gene expression pattern from one cell is different from another, plus there are messengers/signals when the embryo develops, tells certain cells and neighbouring cells what to do and which way to develop, what protein to develop. Genes that are sequence of the genome methylated do not turn on: alteration of histone structure, protein that package and wrap dna to form chromosomes, can also be modified: can accelerate, facilitate or inhibit.
