How long after fertilization does the blastocyst implant into the endometrium?
A)1 day
B)6-7 days
C)2-3 days
D)21 days
E)13-14 days

Question

Quizplus · Accepted Answer

The blastocyst usually implants into the endometrium about 6-7 days after fertilization. This is when the blastocyst has reached the uterus and undergone several cell divisions to form an inner cell mass and outer trophoblast layer that will eventually form the embryo and placenta, respectively.

How Long After Fertilization Does the Blastocyst Implant into the Endometrium