Full thickness
Outside the mother, and inside an egg.
outside
inside
Inside
The egg is made with the embryo inside the body but the duckling inside the egg develops outside the ducks body.
No, they do not need a uterus. The chicks develop inside of the egg instead of inside of their body.
Butterfly eggs develop outside the body. They are usually laid on the underside of leaves to hide them from predators.
From my experience, I think in the water.
they are on the outside of the fruit instead of inside the fruit
they are on the outside of the fruit instead of inside the fruit
The fertilised eggs develop inside the platypus's body for around 28 days, and are then laid and hatched ten days later.
they are on the outside of the fruit instead of inside the fruit