Q1. Describe the major anatomical features that differentiate modern humans from early hominins.
- Modern human brain size (1300-1500 cc) is significantly larger than early hominins (400-800 cc).
- Homo sapiens have a high, vertical forehead and reduced brow ridge, unlike earlier hominins.
- Modern humans possess a flat, non-protruding face with a distinct chin, unlike prognathic early hominins.
- Our pelvis is short, broad, and basin-shaped, specialized for obligate bipedalism.
Answer: Modern humans (*Homo sapiens*) exhibit several distinct anatomical features that differentiate them significantly from early hominins, reflecting evolutionary adaptations primarily for obligate bipedalism, encephalization, and changes in diet and behavior. These differences are evident in both cranial and post-cranial anatomy. One of the most striking differences lies in **cranial capacity and brain organization**. Modern humans possess a significantly larger average brain size, typically rang...