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| 1 | |
Each cell that undergoes spermatogenesis results in four equal-sized cells whereas each cell that undergoes oogenesis produces ________ large cell(s). |
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| 2 | |
Where does a sperm usually fertilize the egg? |
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| 3 | |
Does the zygote receive mitochondria (and mitochondrial DNA) from both the sperm and the egg? |
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| 4 | |
What is it called if the blastocyst implants outside the uterus? |
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| 5 | |
What will the coelom become? |
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| 6 | |
What three major events occur during organogenesis? |
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| 7 | |
Which of the four embryonic membranes encloses the embryo? |
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| 8 | |
Which embryonic membrane produces the first blood cells and the gametogenic stem cells? |
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| 9 | |
Which blood vessels are found in the umbilical cord? |
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| 10 | |
During which stage of development do the organ systems become functional? |
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| 11 | |
What is placenta previa? |
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| 12 | |
What is the estimated frequency of miscarriage? |
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| 13 | |
What is the most common cause of infant mortality in North America? |
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| 14 | |
What do Klinefelter syndrome, Turner syndrome, and triplo-X syndrome have in common? |
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| 15 | |
What is the most common autosomal anomaly? |
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| 16 | |
What happens to the frequency of Down syndrome with increasing maternal age? |
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| 17 | |
Which teratogen is linked with more birth defects than any other? |
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