Exposure to teratogens during the period of the zygote usually results in

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Exposure to teratogens during the period of the zygote often leads to spontaneous abortion or miscarriage due to the high susceptibility of the developing embryo during this stage. In many cases, the zygote does not survive the exposure to harmful substances, resulting in termination of the pregnancy. Therefore, major or minor defects in bodily structure or improperly functioning body systems are less likely to occur during this period.

Exposure to Teratogens During the Period of the Zygote Usually