PSY210H5 Lecture Notes - Lecture 1: Haemophilia, Karyotype, Behavioural Genetics
Document Summary
Shows how genes influence our development and behaviour. Every human gets their genes half from their mother (ovum) and father (sperm) Humans have 46 chromosomes that come in 23 pairs. Picture: karyotype genetic material that belongs to a given organism which shows pairs of chromosomes organized. 22 of the pairs of chromosomes aren"t identical in the sense of the same traits, but similar in the sense of size. The 23rd pair are the sex chromosomes: male or females. When there are two x chromosomes = female. Dna codes the chemical instructions to manufacture proteins and specific proteins give rise to traits. One gene refers to the full set of dna that codes for specific proteins. There"s a distinction between the gene that one has the trait the individual exhibits. Genotype = genetic makeup of individual, but doesn"t always mean that the individual will have a particular set of characteristics. Phenotype is the description of the characteristics of the organism.
