PSY 223 Lecture Notes - Lecture 3: Neoteny, Becoming Human, Twin Study
Document Summary
Heredity and conception: development is driven by nature (genes, development is driven by nurture (environment, development is part nature, part nurture, development results from the interaction of nature and nurture, most recent perspective. Study of genetics: how genes make humans unique from other species and individual differences in our species. Canalization- some processes we all go through in development (genetically programmed to do certain things) No two human beings have the exact same genes (except identical twins) Genes are the units of heredity that pass characteristics to future generations. A gene is a segment of chromosomes that controls a particular aspect of the production of a specific protein. The key to heredity is dna: thymine, adenine, guanine, cytosine. 23 pairs of chromosomes inherited from your parents= genotype. Your observable characteristics= phenotype; depends on your environments and experiences. Epigenesist the environment can"t change gene sequences (genotype), but it can and does impact gene expression (phenotype)
