That made no sense to Sirius until he remembered what DNA was. Where wizarding education failed, his friends sometimes came through. The furrow in his brow left once he pieced the rest of it together.

"Unless I'm remembering wrong, DNA means you've got an exact copy of the animal or person." He vaguely remembered something about cloning? "So you could change into someone else? You could look exactly like me? Or--" Any of the Jorgmund staff, he thought and certainly did not say. "Anyone else?"

Now that was useful.

Sirius rubbed his chin. He'd have to remember that later, if Alloran could be trusted.

"I am curious what it looks like."