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Baby is a zygote.
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Baby is now 1/4 in. long and heart, lungs, and other organs begin to develop.
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All major organs have begun to develop.
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Eyes formed and fingers and toes are visible.
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Face continues to develop.
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Baby is growing muscle.
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Baby can suck its thumb and hiccup.
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Eyes can now open and close and can sense light changes.
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Baby is laying on fat storage.
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Baby is now fully developed.