是的fetus使就形成了,以後隻會減少。詳見下麵20 weeks: A fetus typically has 6–7

million eggs Birth: A newborn typically has 1–2 million eggs Puberty: A girl typically has 300,000–500,000 eggs。女性成熟的卵子一般400-500左右,因為每個月是隨機從眾多(這個隨年齡減少十幾到幾十都有可能)選出一個能夠成熟。