Psychology 1000 Chapter Notes - Chapter 4: Phenotypic Trait, Cell Nucleus, Biological Determinism

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Our physical development (including nervous system) is largely directed by our genetic blueprint passed on to us by our parents. Genetics and our environment determine our behaviour. Meaning it is nature and nurture instead of or. Genotype genetic makeup of an individual: present from conception and never change. Phenotype observable characteristics produced by genetic endowment: can be affected by other genes and environment. Hereditary material carried in chromosomes: tightly coiled molecule of deoxyribonucleic acid (dna) that is partly covered by proteins, dna contains genes. All cells in humans contain 46 chromosomes except for sex cells which carry 23 chromosomes. At conception, 23 from egg and 23 from sperm form a new cell, a zygote, with 46. Genes within each chromosome occur in pairs, so offspring receive one of each gene pair from each parent. Every cell nucleus in body contains genetic code for entire body.