Abhishek Bachchan is about 6 feet 1 inch tall whereas Aamir Khan is only 5 feet 5 inches tall. Which among the following is the most likely reason for this difference?

Humans have 26 bones in the vertebral column (C₇T₁₂L₅S₁Co₁). Tall people have longer vertebrae(not more number of vertebrae). In fact, even a giraffe's long neck has seven cervical vertebrae as in the neck of man.