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Fertilization occurs when a sperm enters in a ovule, to form a new single cell, called zygote.
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Implantation ocours when the ovule implantate in the uterus , this process last 1 week
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In week 6 the zygot is 4 mm long.
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In week 9, is 4,5 mm long, and it weighs only 4 gr.
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In 5 months the embryo is 1 cm long.
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In 6 months the embryo is 2 cm long.
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In 7 months the emryo is 3 cm long.
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In 8 months the embryo is 4 cm long.
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In 9 months the fetus is 5 cm long, and is going to go out.
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In the birth the baby was born. In less than five minutes, the doctor clean the baby.
