smaller cranial capacity, prominent brow ridge, recessed jaw larger cranial capa

Question

smaller cranial capacity, prominent brow ridge, recessed jaw

      
larger cranial capacity, minimal brow ridge, protruding jaw

      
smaller cranial capacity, prominent brow ridge, protruding jaw

      
larger cranial capacity, minimal brow ridge, recessed jaw

In figure 20.3, which of the hominin fossils has the longest and narrowest jaw?

A

      
B

      
C

      
D

      
E

      
F

In Figure 20.3, you placed six skulls in an order consistent with observed evolutionary sequences. Which of these do you interpret is most similar to modern humans?

A

      
B

      
C

      
D

      
E

      
F

In Figure 20.3, you placed six skulls in an order consistent with observed evolutionary sequences. Which three appear to be the most ancient?

A, C, E

      
B, D, F

      
C, E, F

      
B, C, E

      
A, D, F

In figure 20.3, you placed six skulls in an order consistent with observed evolutionary sequences. Which three appear to be the most recent?

A, C, E

      
B, D, F

      
C, E, F

      
B, C, E

      
A, D, F

MAN CHIMPANZEE CRANIAL CAPACITY 1300-1400 cc 300-400 cc BROW RIDGE minimal prominent JAW protruding recessed skull skull DIASTEMA well-developed absent PALATE arched flat DENTITION "V"-shaped "U"-shaped upper jaw upper jaw 20.2 Characteristics of skull morphology for a human and a chimp skull and upper jaw. FIGURE

Explanation / Answer

Relative to the skull of a human (man), which of the following characteristics are exhibited by a chimpanzee?

smaller cranial capacity, prominent brow ridge, protruding jaw

Note: Cranial capacity of humans is more than the cranial capacity of chimpanzees.

Chimpanzees have a prominent brow ridge and a protruding jaw.

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