Final answer:
During folliculogenesis, only one follicle fully matures and is released during ovulation, while others undergo atresia. Female infants are born with one to two million oocytes within their ovarian follicles.
Step-by-step explanation:
Ovarian follicles develop and mature through a process called folliculogenesis. Typically, only one follicle fully matures and is released during ovulation, while multiple other follicles undergo death called atresia. Female infants are born with one to two million oocytes within their ovarian follicles, but this number decreases throughout life until menopause when no follicles remain.