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Sperm is transported to the site of fertilization during ovulation.
(UCSF Health, 2020)

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Sperm and egg combine to create a new organism.
(UCSF Health, 2020)

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Fertilized egg dividing into two cells, going through the process of mitosis.
(UCSF Health, 2020)

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Embryo implants and grows inside the uterus.
(UCSF Health, 2020)

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As the fertilized egg grows, a water sac forms around the egg called the amniotic sac which helps protect the embryo.
(Fetal development: Month-By-Month Stages of Pregnancy, 2020)

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The fetus' heart chamber beginning to develop 25 days after conception.
(Tsiaras, 2010)

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During the first month, the fetus begins developing the mouth, jaw, and throat.
(Fetal development: Month-By-Month Stages of Pregnancy, 2020)

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The brain and spinal cord are formed and the heartbeat can be detected now.
(Fetal development: Month-By-Month Stages of Pregnancy, 2020)

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The baby's arms, hands, fingers, feet and toes are formed in the third month and the first trimester is completed.
(Fetal development: Month-By-Month Stages of Pregnancy, 2020)

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Baby's heartbeat can now be heard through an instrument called a doppler. Reproductive organs are fully developed and the doctor can detect whether it is a male or female.
(Fetal development: Month-By-Month Stages of Pregnancy, 2020)

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Baby starts to move around during this month and starts developing muscles.
(Fetal development: Month-By-Month Stages of Pregnancy, 2020)

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The baby starts to open its eyes.
(Fetal development: Month-By-Month Stages of Pregnancy, 2020)

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The baby's hearing is fully developed during this month and completes the second trimester.
(Fetal development: Month-By-Month Stages of Pregnancy, 2020)

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Most organs are fully developed by this time, however the lungs may still be developing.
(Fetal development: Month-By-Month Stages of Pregnancy, 2020)

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Baby is continuing to grow and lungs are almost fully developed.
(Fetal development: Month-By-Month Stages of Pregnancy, 2020)

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The baby is born during the expulsion stage.
(Tsiaras, 2010)