Psy 219 anthis exam 2 - Study guides, Class notes & Summaries

PSY 219 Anthis Exam 2 Study Guide Questions And Answers What is conception? When the sperm meets the egg what percentage of fertilized eggs implant successfully? 50% what percent of recognized pregnancies end in miscarriage? 15-20% How long does each stage of prenatal development last? germinal=14 days embryonic=weeks 3-8 fetal=weeks 9-birth how do the stages of prenatal development differ from trimesters? different lengths each tri is about 12 weeks. what are the differences amoung a...