A 28-year-old G1P0 woman is diagnosed as having a twin gestation at 15 weeks gestation. Careful examination of the membranes reveals that there is a very thin membrane between the two fetuses. Which of the following statement is most accurate
It is likely that this is a monozygotic gestation. It is likely that this is a dizygotic gestation. It is likely that there are two separate placentas. It is likely that one fetus is a male and the other a female.