Examlex
The process of oogenesis (from undifferentiated germ cell to released ovum) takes anywhere from 11 to 50 years to complete.
Ovum
The female reproductive cell or egg that, when fertilized by a sperm, can develop into an embryo.
Monozygotic Twin
Identical twins that result from the splitting of a single fertilized egg, sharing the same genetic material.
Organ Donation
The process by which an individual voluntarily offers an organ or tissue for transplantation to someone in need.
Dizygotic Twin
Twins that are formed from two separate eggs fertilized by two different sperm cells, making them genetically similar as siblings but not identical.
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