Gestation
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Gestation is the period of development during the carrying of an embryo, and later fetus, inside viviparous animals. It is typical for mammals, but also occurs for some non-mammals. Mammals during pre
Drawing of a fetus in utero.
Pregnant scorpion
Prenatal development
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Prenatal development involves the development of the embryo and of the fetus during a viviparous animal's gestation. Prenatal development starts with fertilization, in the germinal stage of embryonic
Gestation
…Gestation is the period of development during the carrying of an embryo, and later fetus, inside viviparous animals (the embryo develops within the parent). It is typical for mammals, but…
An obstetric ultrasound monitor displaying a detailed sagittal profile view of a human fetus at 20 weeks and 5 days of gestational age.
A sperm cell fertilizing an egg cell