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Is having twins hereditary?

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(Although they have the same birthday, fraternal twins are genetically no more alike than any other sibling.) The tendency to release more than one egg in a single cycle (hyperovulation) is a genetic trait that can be passed from mother to child. read more

For one, genes may play a role in your chance of having fraternal twins (called dizygotic twins) but not identical twins (monozygotic twins). Secondly, it's important to understand that there may be other factors besides genes that increase a woman's chance of having twins. read more

The likelihood of conceiving twins is a complex trait. It is probably affected by multiple genetic and environmental factors, depending on the type of twins. The two types of twins are classified as monozygotic and dizygotic. Monozygotic (MZ) twins, also called identical twins, occur when a single egg cell is fertilized by a single sperm cell. read more

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