PSYC 100 Lecture Notes - Lecture 3: Biopolymer, Allele, Twin
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PSYC 100 Full Course Notes
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Document Summary
A locus describes the placement of a particular gene. Trait the physical expression of a gene that can be seen in an individual. Allele a trait that is in the dna. Single-gene traits: anxiety can be inherited, verbal abilities. Polygenic trait (made up of multiple genes): iq/intelligence. Individuals share ~99. 5% o f the same genes (~25,000 genes: the remaining 0. 5% accounts for genetic variance. Alleles that do vary: 50% - 25% - 12. 5: dna is shared with siblings, 1/8 dna is shared with cousins. Genotype the entirety of the genetic material. Phenotype the traits that are exhibited. Behavioral genomics links behavior and other psychological traits to genetics: francis galton, hereditary genius (1869) Found that genius is heritable (i. e. , if someone was artistic, chances are they had artists in their lineage who exhibited similar artistic traits: these ideas were not universally accepted by the scientific community.