PSYC 304 Lecture Notes - Lecture 3: Fetus, Blastocyst, Sex Organ
Document Summary
Chapter 2 part 1: conception, prenatal development, and birth. 99. 5% similar to one another in terms of genetic makeup. Genes affect every aspect of biology and behavior: genotype our genetic make-up (not always visible/expressed) Set at human conception and endures through life: but genes never act alone, genes always interact with the environment, nature-nurture interaction, phenotype-person"s actual appearance and behavior, example: overweight both genes and experience. New health problems, limitations: alcoholism genes matter. People with friends and family who drink, also drink: our own genes influence the environments we are in. We choose and create our own environments. Epigenetics biochemical modifications of the dna influencing gene expression, without altering the structural base-pair sequence itself. Meaning: gene expression can change without actually changing the sequence of dna letters. How does this work: markers are left on genes. The markers come from life experiences, diet, stress de don"t know all the reasons. A number of processes are at work in this.
