Do twins really skip a generation?

Andrea
My grandmother had about 12 kids. I kind of plan to have a lot of babies like her😊. Among those kids she had my mom who was a twin. So now everyone believes my sister or I will have twins? Is this a myth or a hypothesis? I mean I wouldn't mind having twins but my sister is a whole different story? Any of you ladies having twins or have had twin? Any other twins in the family?