Neha had a discussion on evolution in class. She heard that there is a prediction that human beings will eventually lose their pinky finger (little finger). If this is true, which of the following theories could it be based on?

Natural selection

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Use and disuse of organs

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Survival of the fittest

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Natural variation

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Solution

The correct option is B Use and disuse of organs
Humans are said to use their fifth finger(the pinky) very less. According to Lamarck's theory of use and disuse of organs, the organs which are rarely used will eventually be removed.

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