Which of the following is not a prediction of the expensive tissue hypothesis co

Question

Which of the following is not a prediction of the expensive tissue hypothesis connecting changes in nutrition with an increase in brain size during hominin evolution?

a) Decreasing muscle and skeletal mass allowed for more energy allocation to the brain.

b) Foraging for high-quality foods created a cognitive challenge and selection pressure for increased brain size

c) Increasing fat storage tissue provided additional energy sources

d) Increasing digestibilty of hominin foods allowed for the reduction of gut tissue.

Explanation / Answer

Answer. Option a

Expensive tissue hypothesis states that the greater size of the brain is balanced by the smaller size of the GI tract. This is done to meet the energy requirements. Larger size of brain means larger energy requirements that will be compensated will the smaller energy requirements of the GI tract.

This hypothesis also emphasised on the quality of the diet.

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