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प्रश्न
Give any three characters that have developed during human evolution.
दीर्घउत्तर
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उत्तर
Following morphological characters have evolved during human evolution:
- Bipedal locomotion.
- Straight posture.
- Development of distinct lumbar curve.
- Development of broad basin-shaped iliac bones in the pelvic girdle.
- Acetabular cavities shifted inward to give straight posture.
- Increase in the size of brain and cranial cavity.
- Flattening of face.
- Loss of supraorbital ridges.
- Straightening of forehead.
- Formation of chin.
- Opposable thumb in the hands for grasping.
- Sparse body hair.
- Narrowing of nose.
- Thining of jaw bones.
- Reduction in the jaw musculature.
- Reduction in the size of canines.
- Increase in intelligence
- Social and cultural organisation
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