A client tells you that her mother was a twin, two of her sisters have twins, and several cousins either are twins or gave birth to twins. The client, too, is expecting twins
Because there is a genetic predisposition to twins in her family, there is a good chance that the cleint will have: 1. Dizygotic twins.
2. Monozygotic twins.
3. Identical twins.
4. Nonzygotic twins.
1
Rationale.
1. A familial history of twins usually results in dizygotic (fraternal) twins, or twins that result from two separate ova.
2. Monozygotic twins, known also as identical twins, are not familial.
3. Identical twins, known also as monozygotic twins, are not familial.
4. Nonzygotic twins do not exist.
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