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The fossils of H - VCE - SSCE Biology - Question 40 - 2014 - Paper 1
Question 40
The fossils of H. floresiensis showed that they had opposable thumbs. The development of an opposable thumb in primate evolution is used to distinguish members of ... show full transcript
Worked Solution & Example Answer:The fossils of H - VCE - SSCE Biology - Question 40 - 2014 - Paper 1
Step 1
The development of an opposable thumb in primate evolution
Answer
In primate evolution, the development of an opposable thumb is crucial as it enhances the ability to grasp objects, provides the dexterity needed for precise tasks, and contributes to the survival of the species through improved foraging and tool use.
Step 2
is used to distinguish members of the genus Homo from the other great apes.
Answer
The presence of an opposable thumb is a key characteristic that differentiates members of the genus Homo from other great apes. This adaptation allows for finer manipulative abilities, which are essential for complex tasks.
Step 3
Step 4
was an important anatomical development that assisted tool-making in hominins.
Answer
The opposable thumb provided the anatomical means necessary for advanced tool-making. This capability marks a significant evolutionary advantage, allowing early hominins to create and use tools for various purposes, enhancing their adaptability.
Step 5
is a significant factor in determining the arm-to-leg ratio of modern humans.
Answer
The opposable thumb plays a vital role in the development of the arm-to-leg ratio in modern humans. As tool use and manipulation became more prevalent, adaptations in limb proportions occurred, leading to the unique structure observed in contemporary humans.