Psy 219 anthis exam 2 - Study guides, Class notes & Summaries
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PSY 219 Anthis Exam 2 Study Guide Questions And Answers
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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...
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