Labor and delivery.
Cockatiel females are fertilized internally.
Females mature faster
An embryo grows and develops in a females womb.
Male stick insects can be produced from fertilized eggs, whereas females can come from both fertilized and unfertilized eggs.
If two eggs are fertilized, the offspring will be twins. The twins could be two males, two females, or one of each.
Yes, they do. The eggs, however are externally fertilized. Meaning: The females and males release their eggs and sperm in open water for them to get fertilized
Ovaries
OVARY
Ovaries
healthy females were chosen to work in the fields and house of German officers. sickly females were executed upon arrival.
No, not at all. The males provide the females with their sperm so that the females can have fertilized eggs. After that, the females hand all their eggs over to the males for safekeeping. So the male is not pregnant, but holds all the eggs, and appears to be pregnant.
Amphibians have an external fertilisation, the males drop a sperm-packet wich the females inserts into their cloaca as in salamanders. Female frogs produce eggs and drop the eggmass into the water where they are fertilized by the male.