Question

3. Which statement below most closely explains the link between jaw size and hominid evolution?
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20 points
there appears to be no change in jaw size over time
the jaw size has no relationship to evolution
the jaw size grew bigger and more pronounced over time
the jaw size evolved and changed overtime due to a mutation and became smaller and less protruding

Answer 1

Answer: "the jaw size evolved and changed overtime due to a mutation and became smaller and less protruding."

Explanation: Over hominid evolution jaws and faces became smaller and less protruding (reduced prognathism) as diet, tool use, and cooking reduced the need for large jaws and as skull shape changed with bigger brains. This is a result of evolutionary change (many genetic changes and selection pressures over time), not no change or a simple increase.