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The heart begins to beat at the end of 3 weeks. Our 'reptilian brain' develops within the first two months, but our conscious thought does not develop until six months into the pregnancy.

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โˆ™ 2009-05-17 20:41:28
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Q: In which trimester of pregnancy does the embryo develop brainwaves and a beating heart?
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In what trimester of pregnancy does the embryo develop brainwaves and a beating heart?

second trimester


What starts to develop in the baby the third trimester of pregnancy?

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