PSYC 1000 Chapter Notes - Chapter 3: Trisomy, Gene Expression, Behavioural Genetics
27 Jul 2019
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Haselton: evolutionary psychologist, dress for success: success in mate attraction. How human behavior evolved to solve survival & reproductive problems. Clothes people wear linked to sexual motives. Others asked if volunteers dressed to look attractive. All evolutionary mechanisms: physical traits & behavior influenced by genes. Heredity & behavior: genetic code: structures, regulate development and physiology though life. Genes: basic heredity units, guide protein creation which make up physical. Dna (deoxyribonucleic acid): double-helix molecule with 4 nucleotides adenine, Genes contain information about environmental factors" on gene expression. Genotype: organism"s genetic makeup unique gene set. Genes = unique combinations of 4 nucleotides. Phenotype: physical traits/behavior traits show genetic variation. Develops b/c unique nucleotide sequence & environmental interactions cytosine, guanine, thymine. Chromosome: structures in nucleus linked with all genes. Nucleus has copy each chromosome (long dna strand) 20 to 25 k genes, 23 chromosomes (1/2 mother, 1/2 father) Homozygous: two genes at given location (locus) same.
