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Gynaecology & Obstetrics General 2a5a9879

Which of the following is true regarding chorionicity in multifetal pregnancy

A
Monochorionic membranes should have four layers
B
Dichorionic pregnancies are always dizygotic
C
Monochorionic pregnancies are always dizygotic
D
Chorionicity is accurately determined by first trimester ultrasound scan
High-Yield Explanation
Monochorionic pregnancies have dividing membrane that is 2 layer thick. Monozygous twins can be dichorionic as well.

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