there is absolutly no effect in the eggs or sperm. that's just some dumb kids who said that to make fun of someone else.
When the menstrual cycle is reversed, the force of gravity causes the production to destablizie, annihilating one's eggs and sperms (no babies for you!)
if sperms were larger than eggs, al the sperms will squash the egg and there will be no baby!!!
An organism that has an ovary for the production of eggs and a testes for the production of sperms is known as " hermaphrodite"
When the menstrual cycle is reversed, the force of gravity causes the production to destablizie, annihilating one's eggs and sperms (no babies for you!)
Gametes.
Most eggs are non motile. Sperms reach the eggs.
Just one.
They are called sex cells.
11 sperms and 21 eggs
It's the Cloaca
Normally non-identical twins.
They do not.