A cloned embryo is created by cell nuclear transfer from an adult cell into an enucleated oocyte.
2
All sexually reproducing organisms develop from a single fertilized oocyte by cell multiplication and differentiation.
3
Follicular factors affecting oocyte maturation and development competence 20.
4
Humans are most commonly infected by swallowing the oocyte form of the parasite in soil (or kitty litter) contaminated by feces from an infected cat; or by swallowing the cyst form of the parasite in raw or undercooked meat.
5
The first meiotic division is now completed, and the oocyte is now a secondary oocyte, and starts its second meiotic division.