New model helps understand why most human pregnancies are singletons
April 22, 2026
April 22, 2026
HOUSTON, Texas, April 22 -- Rice University posted the following news release:
* * *
New model helps understand why most human pregnancies are singletons
*
Each month during a woman's menstrual cycle, an ovary prepares 10-20 antral follicles, fluid filled sacs that hold immature eggs, for maturation. In most cycles, only one follicle is selected to undergo maturation, eventually releasing an egg ready for fertilization. In fact, only 2-3% . . .
* * *
New model helps understand why most human pregnancies are singletons
*
Each month during a woman's menstrual cycle, an ovary prepares 10-20 antral follicles, fluid filled sacs that hold immature eggs, for maturation. In most cycles, only one follicle is selected to undergo maturation, eventually releasing an egg ready for fertilization. In fact, only 2-3% . . .