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My grandfather my mom's dad has a twin my mom's auntie from her mom's side has a twin and my mom's sister had twins does that increase my chances of having twins?
Wiki User
∙ 14y ago
Yes, twins do seem to run in families. The cause is hyper-ovulation, a genetic trait to release more than one mature egg each month. This effect is only applicable to fraternal twins, as identical twins are not effected by genetics and every pregnancy carries the same chance of developing into identical twins.
The exception to this is older mothers. As we age the chance of having twins increases whether there are twins in the family or not.
A family history of twins doesn't make a male any more likely to have twins themselves. Men can pass the gene on to their children - it will only effect daughters, a male with the gene does not ovulate so his carrying the trait will have no effect on his wife.
Any twins in the family conceived with the aid of fertility drugs will not have an effect on the twin "gene".
Wiki User
∙ 14y ago
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