When would exposure to a potentially harmful substance be most likely to damage many organs in a developing embryo?
(1)during the last three months of pregnancy
(2)during the early stages of pregnancy
(3)during the formation of the zygote
(4)during meiosis in both males and females

A mother can give exposure and potentially damage many organs in an embryo by using a harmful substances during the early stages of her pregnancy. It is always important to never take any harmful substances especially if you think you can be pregnant. The correct choice will be number 2.

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When would exposure to a potentially harmful substance be most likely to damage many organs in a developing embryo? (1)during the last three months of pregnancy (2)during the early stages of pregnancy (3)during the formation of the zygote (4)during meiosis in both males and females

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When would exposure to a potentially harmful substance be most likely to damage many organs in a developing embryo?
(1)during the last three months of pregnancy
(2)during the early stages of pregnancy
(3)during the formation of the zygote
(4)during meiosis in both males and females