PSY100H1 Chapter Notes - Chapter 3,9: Trisomy, Behavioural Genetics, Heredity
10 Apr 2020
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Dr haleston: evolutionary psychologist that studies how human behaviour relates to survival and reproduction. Studied how clothing is linked to sexual motivation. Researchers discovered that behaviours are related to genes. Heredity: genetic transmission of characters from parents to offspring. Genes: basic units of heredity that are responsible for creating proteins that make up physical structure and regulate development. Made of dna: molecule formed in a double helix that contains 4 nucleotides. Genotype: genetic makeup of an organism; unique set of genes that make an indivdual"s code. I. e. : eye color, shape of facial feature, personality. Chromosomes: structures in cellular nucleus that are lined with all of the genes of an individual inherits. 20,000 to 25,000 genes distributed across 23 pairs of chromosomes (donated by papa and. Mama); only 6000 to 7000 are active in brain. Chromsome 23 will either be xy or xx. Trisomy: extra chromosome present that alters genetic make-up of phenotype.
