Men, of course, don't ovulate, so even if they've inherited that hyperovulation gene from their parents, it doesn't increase their own odds of conceiving twins.
You may have heard that twins 'skip a generation'. While it's not a blanket true statement, it is actually based on some truth. Here's how: we know that twinning is due to factors on the woman's side, like hyperovulation. But it takes two to make a baby, or babies in our case! This is where the skipping is relevant. If a man has inherited the hyperovulation gene from his mother, he may pass this gene on to his daughter, but it won't impact on the chances of him conceiving multiples with his own partner.
Men, of course, don't ovulate, so the chance of twins or more is up to the woman. See all in Getting Pregnant. See all in Pregnancy. See all in Preschooler. See all in Life as a Parent. See all in Video. You might also like You might also like. Maternity wear for a twin pregnancy. How to get the best from your GP. Real lives: Joanna's twin pregnancy. Is it true that if your mum had a caesarean, you probably will too? Get the BabyCentre app. Brazil Canada Germany India.
Many fertility drugs work by increasing the number of eggs the ovaries produce, thus increasing the chance of multiple eggs being released and fertilized to produce fraternal twins. Additionally, as part of in vitro fertilization IVF , a woman may be implanted with multiple embryos to increase the likelihood of one implanting.
While this raises the likelihood of becoming pregnant, it also increases the chances of having twins. Having twins may seem about as likely as winning the lottery. After all, only an estimated 3 percent of pregnancies per year in the United States are multiples. Depending on your age, genetics, and even the fertility treatments you may be trying, your chance of having twins might just be higher than the average.
So, if you have your heart set on two little bundles of joy, you may be pleased to learn that other factors are leaning your direction. Keep in mind that pregnancies involving multiples are higher risk and can come with more complications.
Giving birth to multiples is more common today than ever. Trying to get pregnant? We have some suggestions on how you can increase your chances of getting a positive result. The information on this site should not be used as a substitute for professional medical care or advice.
Contact a health care provider if you have questions about your health. Is the probability of having twins determined by genetics? From Genetics Home Reference. Topics in the Genetics and Human Traits chapter Are fingerprints determined by genetics? Is eye color determined by genetics?
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