The following two questions refer to the characteristics of Homo sapiens and other primates. 3.1.1 State FOUR structural characteristics of Homo sapiens that are similar to other primates. 3.1.2 Tabulate FOUR structural differences between the skull of Homo sapiens and that of other primates.

Here are the answers to your questions.

3.1.1)
Four structural characteristics of Homo sapiens that are similar to other primates are:

• Five-fingered hands and five-toed feet
• Forward-facing eyes (binocular vision)
• Presence of nails instead of claws
• Flexible shoulder and elbow joints

3.1.2)
Here are four structural differences between the skull of Homo sapiens and that of other primates:

Characteristic	Homo sapiens	Other Primates
Cranium size	Larger, more rounded	Smaller, less rounded
Brow ridges	Reduced or absent	Prominent
Face	Flatter, less prognathous (less projecting)	More prognathous (more projecting jaw)
Foramen magnum	More centrally located at the base of the skull	More posteriorly located at the back of the skull
Chin	Present	Absent

4.1.1)
One possible advantage of having an opposable thumb is that it allows for a precision grip, which is essential for manipulating objects and making tools.

4.1.2)
Four characteristics that humans share with primates, other than an opposable thumb, are:

• Five-fingered hands and five-toed feet
• Forward-facing eyes (binocular vision)
• Presence of nails instead of claws
• Flexible shoulder and elbow joints