Twinning

Question 1

What events can lead to the formation of dichorionic diamnionic twins?

Answer 1

2 eggs fertilized separately

Division of conceptus by day 3

Question 2

What event leads to monochorionic diamniotic twins?

Answer 2

Division of conceptus between 4-8 days

Question 3

Can monochorionic diamniotic twins result from a dizygotic pregnancy?

Answer 3

No

Question 4

What event leads to a monochorionic monoamniotic twins?

Answer 4

Division of conceptus between 8-12 days

Question 5

If division of the conceptus occurs after 12 days post conception, what is the result?

Answer 5

Monochorionic
Monoamniotic
Conjoined twins

Question 6

Twin-Twin transfusion Syndrome effects what type of twins?

Answer 6

Mo/di