62 days
8 weeks
If it's a human embryo, about nine months. If you're a mouse embryo, about twenty days. Gestation time in mammals varies species to species, but it's generally safe to say the bigger the animal, the longer the gestation.
fertilization occurs in the oviducts and the fertilized ovum moves down to the womb where it attaches its self to the walls, once the it will move no further and all other stages take place there
It depends on the creature in question.
7 days from fertilization.
8 weeks
You've got it confused I'm afraid - the embryo forms FROM the egg. It doesn't move anywhere. If you're talking about a bird or reptile egg, the shell forms around the embryo and yolk sac during its passage through the mother's body.
The babies (embryo) heart starts to beat at about 4 weeks.
If it's a human embryo, about nine months. If you're a mouse embryo, about twenty days. Gestation time in mammals varies species to species, but it's generally safe to say the bigger the animal, the longer the gestation.
The gestation period for a cat is typically around 63-65 days. During this time, the embryo develops into a fully-formed kitten inside the mother's womb. At birth, the kitten is ready to survive and navigate the world outside the womb.
You mean "gestation"? Gestation is the carrying of an embryo or fetus inside a female viviparous animal. Got it from Wikipedia. Sorry about the links, I can' take them off.
59 hours
It takes about one day.
it depends on what narcotics
1 month
fertilization occurs in the oviducts and the fertilized ovum moves down to the womb where it attaches its self to the walls, once the it will move no further and all other stages take place there
The fetus is passed during the bleeding of a miscarriage. If it's in the first trimester, the fetus is smaller than a prune, so would look like a large clot.