Psychology 1000 Lecture Notes - Lecture 4: Twin, Cyril Burt, Twin Study

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Genes (dna) rna protein molecules (sequences of amino acids) The influence of genes is through protein synthesis there are no genes for a particular attribute. Genes determine range of possibilities, but not degree of expansion. Don"t determine exact height but do determine if your tall or short. White crowned sparrow must hear adult song between 7th and 60th day. If they don"t then they will never learn the song. Under genetic control but the environment can turn it on or off. Phenotype: outward expression of genotype (characteristics, behaviors, etc. ) Outward characteristics may or may not indicate underlying genetic contribution. Alleles- different versions of what molecule could look like. Doesn"t imply a trait, you don"t know unless you have a genotype. Produces effect in either homozygous or heterozygous mode. Not always one or the other, sometimes you get a blend. Traits related to action of more than 1 gene or chromosome.