Gynaecology & Obstetrics General obstetrics 875457b3 embryo implants on the endometrium after--------of feilisation : A 3-5 days B 7-9 days C 10 days D 16 days High-Yield Explanation 6-7 days after feilisation, the embryo implants the uterine wall. Reference : william's Textbook of Obstetrics 4th edition page no 89