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Medical Foundations Name______________________________ Per____________ Passing on your DNA 1. Why is sexual reproduction more advantageous than cloning? The Egg’s Journey 2. Describe the path the egg takes after being released from the ovary. The Sperm’s Journey 3. What kind of obstacles will a sperm encounter once it enters the female? The First Two Weeks 4. Why would more than 50 percent of all fertilized eggs not survive? What kind of problems could a fertilized egg encounter? The Embryo Takes Shape 5. Describe the three cell layers that develop and include what parts of the body those cell layers will become. 6. How are genes turned on? Medical Foundations Name______________________________ Per____________ Messages in the Gene 7. Before the 7th week of development, how can you tell the sex of the fetus? 8. Describe how the fingers develop in the fetus. Feeding the Growing Fetus 9. Why can’t a baby hear until after its bones have developed? The Third Trimester 10. Why is human childbirth so much more dangerous than the births of other animals?