I will help to support the correct answer. First, I'm a father of identical twins, that had TWO sacs and TWO placentas. It is a common misunderstanding that identical twins always have one placenta. That is definitely not always the case.
So, there are two cases where there are two placentas,
1) Fraternal twins (always separate placentas)
2) Identical twins, with separate placentas and separate sacs, also known as, "dichorionic-diamniotic"
And there are two cases where there will only be one placenta which only occurs with identical twins
1) Same placenta, same sac, or monochorionic-monoamniotic
2) Same placenta, separate sacs, or monochorionic-diamniotic
2006-06-24 16:07:49
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answer #1
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answered by Kevin 7
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It depends on if they are identical twins or fraternal twins. Identical twins are from one fertilized egg that split completely in two during very early stages of development. They will share a placenta.
Fraternal twins are two separate eggs and develop separate from each other. They will each have a place of their own.
2006-06-19 19:16:31
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answer #2
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answered by AlongthePemi 6
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If they are fraternal twins, there are two placentas. If they are identical twins, it's one.
2006-06-19 19:13:32
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answer #3
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answered by Anonymous
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depends on the pregnancy
nonidentical twins (fraternal) always have two placentas and amniotic sacks
identical twins can have one (monochorionic) OR two (dichorionic) placenta AND ALSO one (monoamniotic) OR TWO (Diamniotic) amniotic sacks
2006-06-19 19:54:32
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answer #4
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answered by tpuahlekcip 6
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it depends on if the twins are fraternal or Identical..with fraternal you will have two placetas and with identical twins you will have one.
2006-06-19 19:14:00
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answer #5
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answered by miss_chrissy_dawn 4
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It depends if they are conjoined or not. If not i believe 2
2006-06-19 19:12:55
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answer #6
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answered by bananalvr 2
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