"Why do only the thumbs have two joints among human fingers?" This is a question in Ant Manor's daily small class on July 17th. After the user answers correctly, he can get a 180g chicken feed as a reward. So what is the purpose of this question? What is the answer? Let’s take a look below.
1. Question:
Why is it that only the thumb has two joints among human fingers?
Conducive to using tools
Inherited from ancient apes
2. Correct answer:
Conducive to using tools
3. Answer analysis:
This structure is the inevitable result of long-term evolution of human beings. It is to make human hand activities more flexible and powerful, and it is a manifestation of human adaptation to the environment during the process of evolution.
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