Effects of Past Global Change on Life (1995) / Chapter Skim
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Pages 234-234
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The reason that human ancestors could not evolve the large brain of Homo until they totally abandoned arboreal activity is that the developmental delay that yielded the large brain was linked to other aspects of maturation. A General retardation of development produced the large brain by projecting the high fetal rate of brain growth into the postnatal interval.
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