Question

Why the no. Of oocytes is fixed in human ovary 2?

Answer 1

About 2 million primary oocytes are found in the ovaries of a newborn femal Many regress during childhood so that at puberty about 30-40 thousand remain. Only about 200-400 of these ever reach full maturity after puberty and are expelled at ovulation during the female's reproductivity

Also, from this site, I see that

Human ovaries contain follicles as basic functional units. The total number of follicles is determined early in life, and follicle depletion leads to reproductive senescence. Human follicles begin development during the fourth month of fetal life, and each human ovary contains ≈400,000 follicles at birth.

From my understanding, there is one oocyte inside one follicle. So, two number should be the same. Why there is a big difference? Or my understanding is just wrong