2006-11-07 00:24:00 · 6 answers · asked by Link 4 in Pregnancy & Parenting ➔ Pregnancy
Fraternal twins develope from 2 separate uva, unlike identical, which are a single ova that splits into two fetuses. Hence a fraternal pregnancy is the same as 2 individual pregnancies.
2006-11-07 00:26:49 · answer #1 · answered by Anonymous · 3⤊ 0⤋
Because they come from completely different fertilized eggs. Consequently, when the eggs attach to the uterine wall, they grow separate placentas. Identical twins come from one fertilized egg, therefore they have one placenta.
2006-11-07 08:34:48 · answer #2 · answered by kathy_is_a_nurse 7 · 0⤊ 0⤋
Because they have two separate eggs and each have their own embryonic sac. Identical twins split from one egg so they are in the same embrionic sack.
2006-11-07 08:27:34 · answer #3 · answered by ksmpmjoll 3 · 0⤊ 0⤋
Each baby in a pregnancy has his/her own placenta to provide nourishment.
2006-11-07 08:26:11 · answer #4 · answered by Sher 3 · 0⤊ 0⤋
They are two separate eggs fertilized separately.
2006-11-07 08:27:40 · answer #5 · answered by kcrobinson03 2 · 0⤊ 0⤋
because they come from two different eggs
2006-11-07 08:45:46 · answer #6 · answered by ktpb 4 · 0⤊ 0⤋