Uncovering the Mysteries of Human Fertility: On Sex, Fertile Days, and Why the Rabbit Dies
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Transcript of Uncovering the Mysteries of Human Fertility: On Sex, Fertile Days, and Why the Rabbit Dies
![Page 1: Uncovering the Mysteries of Human Fertility: On Sex, Fertile Days, and Why the Rabbit Dies](https://reader035.fdocuments.us/reader035/viewer/2022070316/555d6cb3d8b42a687b8b4d27/html5/thumbnails/1.jpg)
The Mysteries of Human Fertility: On Sex, Fertile Days, and Why the Rabbit Dies
Allen Wilcox MD, PhDNational Institute of Environmental Health Sciences
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![Page 2: Uncovering the Mysteries of Human Fertility: On Sex, Fertile Days, and Why the Rabbit Dies](https://reader035.fdocuments.us/reader035/viewer/2022070316/555d6cb3d8b42a687b8b4d27/html5/thumbnails/2.jpg)
What are an average couple’s chances of conceiving in one
menstrual cycle if they stop using any contraception?
![Page 3: Uncovering the Mysteries of Human Fertility: On Sex, Fertile Days, and Why the Rabbit Dies](https://reader035.fdocuments.us/reader035/viewer/2022070316/555d6cb3d8b42a687b8b4d27/html5/thumbnails/3.jpg)
What are an average couple’s chances of conceiving in one
menstrual cycle if they stop using any contraception?
25%
![Page 4: Uncovering the Mysteries of Human Fertility: On Sex, Fertile Days, and Why the Rabbit Dies](https://reader035.fdocuments.us/reader035/viewer/2022070316/555d6cb3d8b42a687b8b4d27/html5/thumbnails/4.jpg)
What are an average couple’s chances of conceiving in one
menstrual cycle if they stop using any contraception?
25%
In 3 months 50%In 6 months 66%In one year 90%
![Page 5: Uncovering the Mysteries of Human Fertility: On Sex, Fertile Days, and Why the Rabbit Dies](https://reader035.fdocuments.us/reader035/viewer/2022070316/555d6cb3d8b42a687b8b4d27/html5/thumbnails/5.jpg)
Female reproductive tract
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Ovary
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SPERM
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How many days in each cycle is a woman fertile?
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• Six days:– Five days before ovulation
– The day of ovulation
How many days is a woman fertile?
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The perilous journey of the fertilized egg
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Fertilized human eggs
DAY 2 DAY 3
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A woman needed a kidney transplant. Her adult children were tested as possible donors.
After testing, the doctors told the woman that her children were not really hers.
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A woman needed a kidney transplant. Her adult children were tested as possible donors.
After testing, the doctors told the woman that her children were not really hers.
![Page 16: Uncovering the Mysteries of Human Fertility: On Sex, Fertile Days, and Why the Rabbit Dies](https://reader035.fdocuments.us/reader035/viewer/2022070316/555d6cb3d8b42a687b8b4d27/html5/thumbnails/16.jpg)
A woman needed a kidney transplant. Her adult children were tested as possible donors.
After testing, the doctors told the woman that her children were not really hers.
Human chimerism.
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“ICSI” – intracellular sperm injection
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What are the chances that an implanted blastocyst will die in utero?
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What are the chances that an implanted blastocyst will die in utero? 33%
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Q: What can biology tell us about when a human life begins?
Q&A
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The Nuclear Renaissance
David McNelis, Ph.D.
Director, Center for Sustainable Energy, Environment and Economic Development
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