Tokutaru

It's actually the opposite; twins are more likely to happen on the mother's side rather than the father's. Fraternal twins happen when the ovaries release multiple eggs. Granted, a father can pass down this gene to his daughter, but it doesn't increase the possibility of his child's mother having twins. Identical twins on the other hand are spontaneous as the single egg randomly splits into two.

Twins usually skip one generation, like if one of your parents has a twin, then is more likely that u have twins rather than u having a twin urself. Also, on fecundación, the dather doasnt have much to do with twins, the only thing thats 100% on the fathers side on fecundation is the gender. Everything else is mostly on the mother since everything is happeninh inside of her already