In addition, the two daughter cells that remain after a fertilized egg undergoes its first division may separate and divide independently of each other.

The eggs of living crocodylians undergo degradation over their incubation period so that hatchlings can easily break through the shells.

Salted eggs sold in the Philippines undergo a similar curing process, with some variation in ingredients used.

The fertilised eggs undergo delayed development and do not implant in the female's womb until November.

The eggs which are passed out in the faeces into the environment are undeveloped and undergo embryonation outside the host.

The eggs undergo direct development, hatching into miniature frogs, without a tadpole stage.

The species uses internal fertilization - the fertilized eggs undergo direct development.

Others brood their eggs and the larvae undergo metamorphosis before the eggs hatch.

Many caecilians give birth to live young, and in the animals that do not do this, the eggs may undergo metamorphosis before they hatch.