Multiple Choice
The mass of cells that attaches itself to the wall of the uterus about two weeks after conception is called a(n) ________ and has about ________ cells.
A) umbilical cord; 36
B) placenta; 36
C) blastocyst; 150
D) autosome; 150
E) chorion; 3
Correct Answer:
Verified
Correct Answer:
Verified
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