Many of my friends are of the opinion that Rapunzel from Tangled, and Elsa from Frozen are the real sisters. I see their point. They both have blonde hair (as a result of their magical powers.) And of course, they both have magical powers. However, let's look at it from a genetic standpoint.
Rapunzel's features don't match. First of all, Rapunzel's hair would normally have been brown, like her mother's, and not blonde. That's already one genetic marker that would not fit. Second of all, Rapunzel's eyes are green. Neither Elsa's mother or father have green eyes.
Furthermore, some argue that the sharing of life giving magical powers indicates that they must be sisters. But let's look at it again from a different point of view. Rapunzel's power comes from the flower that her parents distilled and gave to the mother during the pregnancy. Elsa was born with the powers naturally.
Now, it's highly likely that Elsa and Anna are