The maturation of male and female gametes differs in the number of meiotic divisions. Histones in oocyte nuclei are replaced by protamines. Insect oocytes receive a rich supply of RNA from follicle cells. This regeneration is accomplished by reorganizing the iris tissue without cell division and growth. Enzymes in the iris cells transform retina pigment into lens crystallin.
Mammals can regenerate eye lenses in a similar way.
PGC give rise to eggs or sperm. PGC in insects are known as polar bodies 12. PGC give rise to eggs or sperm. PGC in insects are known as polar bodies. PGC often migrate to the mesodermal portion of the gonad.