PSY BEH 111D Lecture Notes - Lecture 3: Neural Darwinism, Synaptogenesis, Cerebral Cortex

• School: UC-Irvine
• Department: Psychology and Social Behavior
• Course: PSY BEH 111D
• Professor: Angela Lukowski

Document Summary

Process of genetic transmission: chromosomes carry genetic information. 23 from mom, 23 from dad: genes are a portion of dna located on individual chromosomes, genotype: the specific set of genes that (cid:449)ere i(cid:374)herited (cid:271)(cid:455) o(cid:374)es(cid:859) pare(cid:374)ts. Identical twins have the same genotypes: phenotype: the observable and measureable genetic expressions of physical and behavioral characteristics. From genotype to phenotype: genes never work in isolation, alleles: alternative forms of a gene. Co dominant: both alleles are strong and present (eg. ab blood type) I(cid:374)(cid:272)o(cid:373)plete do(cid:373)i(cid:374)a(cid:374)(cid:272)e: ho(cid:449) up as (cid:858)(cid:271)le(cid:374)di(cid:374)g(cid:859) (cid:894)eg. (cid:858)(cid:373)ediu(cid:373)(cid:859) ski(cid:374) (cid:272)olor(cid:895: homozygous: alleles from both parents are the same for a specific trait or gene, heterozygous: alleles from both parents are difference for a specific gene or trait. Regulatory cascades: complicated interactions between genes and the environment. Pku phenylketonuria: recessive disorder, individuals are affects only if they are homozygous for the critical allele, no enzymes necessary to metabolize phenylalanine. Identified shortly after birth or causes mental retardation.