Normal prenatal development occurs in 95% to 98% of all pregnancies.Identify two genetic or chromosomal abnormalities and two teratogens associated with birth defects in the remaining 2-5% of pregnancies.Describe the nature of their effects on development.

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The Answer of Normal prenatal development occurs in 95% to 98% of all pregnancies.Identify two genetic or chromosomal abnormalities and two teratogens associated with birth defects in the remaining 2-5% of pregnancies.Describe the nature of their effects on development.

Normal Prenatal Development Occurs in 95% to 98% of All