# Why Non-Identical Twins Run In Some Families, According To Genetics

- Link: https://www.widthness.com/why-non-identical-twins-run-in-some-families-according-to-genetics/
- Published: 2024-03-18T09:30:59-05:00
- Author: Curated by Theresa Wysocki

Photo caption: They may not have come from the same egg, but they’re still two peas in a pod. Photo credit: Katrina Elena / Shutterstock.com. Article by Laura Simmons. IFLScience – March 14, 2024. Study: Human Reproduction. Why do some families see more than their fair share of twin births? Identical twins are a random surprise, but scientists know that non-identical (or fraternal) twins have a genetic link. Finding the specific genes involved, however, has been another story. Now, new research has picked up on seven genes, and a test for them could not only help determine your chances of having twins, but also reveal clues about your fertility. […] Click here to view original web page at www.iflscience.com