پاورپوینت حاملگی چندقلو نوع فایل: پاورپوینت قابل ویرایش 29 اسلاید ¨ More commonly fertilization of two ova with tow sperm double ovum or fratermal or dizygotic twins ¨ About tow third. ¨ One fertilized ovum divided into two similar structures, into a separate indivi