PSYC 304 Lecture Notes - Lecture 3: Transgenerational Epigenetic Inheritance, Epigenetics, Cytosine
Document Summary
Define epigenetics and describe 2 epigenetic mechanisms. Transcription: conversion of dna code into protein. Dna has unwound, and new strand of nucleotide bases have been formed (=mrna) histone proteins. Chromosomes: 23 pairs in each cell; very tightly wound dna that is wrapped around. Dna: made of 4 bases: adenine, thymine, cytosine, guanine. Mrna moves into the cytoplasm of the cell from the nucleus after transcription and interacts with ribosomes for translation. Translation: translates mrna into string of amino acids. Psychologists view on relationship between evolution, genes, and behaviour: of each species. Evolution influences the pool of behaviour influencing genes available to the members. Experience modifies the expression of an individual"s genetic program. Development of each individual"s nervous system depends on the interaction between genes and experience. Interaction leads to each individual"s current behavioural capacities and tendencies - determined by unique pattern of neural activity (thoughts, feelings, theories, etc. )
