Tricky Spool Riddle SOLUTION - ft Anne Wojcicki

The video is the final installment in a series answering physics riddles. It begins with a recap of a previous riddle involving a spool and rope, exploring the physics of torque and friction. The video then transitions to a discussion about chromosomes, specifically focusing on the number of chromosomes in mules, which are hybrids of horses and donkeys. The video concludes with a light-hearted appreciation for the learning experience.

What new insight or understanding did you gain from this video?