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Questions and Answers
What is the term for a specific abnormality that results from disruption of normal developmental processes that depend on time, not on the agent?
What is the term for a specific abnormality that results from disruption of normal developmental processes that depend on time, not on the agent?
Which type of chromosomal abnormality is usually caused by a non-disjunction error in cell division?
Which type of chromosomal abnormality is usually caused by a non-disjunction error in cell division?
What is the term for a recognized pattern of malformations with a given etiology?
What is the term for a recognized pattern of malformations with a given etiology?
Which of the following is an example of a teratogen?
Which of the following is an example of a teratogen?
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What is the percentage of zygotes that have chromosomal aberrations?
What is the percentage of zygotes that have chromosomal aberrations?
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What is the approximate incidence of trisomy 21 amongst livebirths?
What is the approximate incidence of trisomy 21 amongst livebirths?
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What percentage of spontaneous abortions will have trisomy 18?
What percentage of spontaneous abortions will have trisomy 18?
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Approximately what percentage of trisomy 13 conceptuses will end as spontaneous abortions or stillbirths?
Approximately what percentage of trisomy 13 conceptuses will end as spontaneous abortions or stillbirths?
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What is the approximate incidence of trisomy 18 amongst livebirths?
What is the approximate incidence of trisomy 18 amongst livebirths?
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Which trisomy is more common in livebirths than trisomy 13?
Which trisomy is more common in livebirths than trisomy 13?
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