Vitellogenesis is the process of yolk protein formation in the oocytes of non mammalian vertebrates during sexual maturation. The term vitellogenesis comes from the Latin vitellus ("egg yolk").
The process of forming yolk proteins within the oocytes of non-mammalian vertebrates, specifically during their sexual development, is called vitellogenesis. This term derives from the Latin word "vitellus," meaning "egg yolk."