Which change is NOT associated with hominin skull evolution?

Prepare for the VCE Biology Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

The change regarding the brow ridge becoming more prominent is not associated with hominin skull evolution when considering the trends observed in the fossil record. In fact, as hominins evolved, there was a general trend toward a reduction in brow ridge prominence. Early hominins, like Australopithecus, had more pronounced brow ridges, while later species, including Homo sapiens, exhibit a more rounded skull and less prominent brow ridges, reflecting a shift in facial structure and brain size.

In contrast, the other options reflect well-documented changes in hominin evolution. The foramen magnum, the hole at the base of the skull where the spinal cord enters, became more centralized as hominins adapted to bipedalism, indicating an upright posture. The flattening of the face corresponds with changes in dietary habits and the use of tools, leading to a more reduced prognathism. The rounder skull shape is associated with increased brain size and complexity over time.

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