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Does identical twins have different sacs?

1 doctor weighed in
Dr. Ed Friedlander
Pathology

In brief: Some do some don't

If two twins share the same sac, they're identical.
(almost always works.) the pathologist who examines the placenta can tell. Identical twins can have two sacs, or one sac; if there are two sacs, there can be one or two chorions. Fraternal twins won't share chorions or sacs.

In brief: Some do some don't

If two twins share the same sac, they're identical.
(almost always works.) the pathologist who examines the placenta can tell. Identical twins can have two sacs, or one sac; if there are two sacs, there can be one or two chorions. Fraternal twins won't share chorions or sacs.
Dr. Ed Friedlander
Dr. Ed Friedlander
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