Question

Which of the following changes for man in the course of evolution is probably useless?

• A. Development of being erect
• B. Development of cranial capacity
• C. Loss of tail
• D. Development of opposable thumb

Answer 1

The correct option is C Loss of tail

Loss of tail is perhaps a relatively useless change for man in the course of evolution. The volume of cranial cavity and size of the skull increased in order to accomodate the large and complex brain. Modern man is supposedly the most intelligent species on earth. Erect posture of human beings is due to major changes in the muscular and skeletal systems, which has been a useful change. During the course of evolution, man's thumb came opposite in position to the fingers, enabling the hand to work and grasp better.