Author Question: When the blastocyst burrows deep into the uterine lining, __________. A) implantation occurs B) ... (Read 119 times)

Caiter2013 · **on:** Jun 22, 2018

When the blastocyst burrows deep into the uterine lining, __________.

A) implantation occurs
B) pregnancy does not occur
C) it stops growing
D) the cells of the zygote first duplicate

Question 2

Which statement about a blastocyst is true?

A) It consists of a single cell.
B) It is a structure that feeds the developing organism.
C) Between the seventh and ninth days, it burrows deep into the uterine lining.
D) It is a membrane that helps to keep the temperature of the prenatal world constant.