Many parents-to-be will have questions about multiple births. Maternity nurses should be able to tell them that:
1. twinning and other multiple births are increasing because of fertility drugs and delayed childbearing.
2. dizygotic twins (two fertilized ova) are the ones with the potential to be "Sia-mese," or conjoined twins.
3. identical twins are more common in Caucasian families.
4. fraternal twins are same sex, usually male.
1
1. Correct. If the parents-to-be are older and have taken fertility drugs, they would be very interested in this information.
2. Incorrect. Siamese twins are monozygotic, from one fertilized ova, in which division oc-curred very late.
3. Incorrect. Identical twins show no racial or ethnic preference; fraternal twins are more common among African-American women.
4. Incorrect. Fraternal twins can be different sexes or the same. Identical twins are the same sex.
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