Having twins may depend on the mom. Twins are divided into monozygotic and dizygotic twins, monozygotic twins are when a woman produces a single egg, which combines with sperm and splits into two fertilized eggs, and dizygotic twins are when a woman produces two eggs, which combine with two sperm to form two fertilized eggs. Thus having twins may depend on the mother, but not absolutely. A woman’s ability to conceive twins is episodic, and to a certain extent is influenced by family genes, lifestyle habits, and other aspects, so a woman’s chances of conceiving twins under natural conception are variable. Couples should take a natural approach to the conception of twins, and should not be overly pushy. If a woman is sure that she is pregnant with twins, she should go to the hospital for regular checkups and take good care of herself.