Represented in Figure 10.1 are two different interpretations of how australopithecines
evolved. Use figure 10.1 to answer question # 1-3. Circle the letter that best
answers the question. Figure 10.1 Figure 10.1
- The most significant difference between the two graphs is:
- Graph F shows A. afarensis evolving 4 million years ago while
graph G shows A. afarensis evolving 3.75 million years ago,
- The placement of A. africanus on the evolutionary tree.
- H. erectus is directly related to H. habilis.
- The placement of A. robustus on the evolutionary tree.
- Both graphs suggest all of the following EXCEPT:
- H. sapiens evolved from H.erectus.
- A. africanus is related to A afarensis.
- H. habilis became extinct sometime between 1-1.75 million years
- A. boisei eventually evolved into H. sapiens
- The type of evidence that would be most helpful in determining which graph
is more correct would be:
- a newly discovered skull fossil of H. sapiens.
- an unidentified fossilized skull found to be 750,000 years old.
- an unidentified fossilized skull found to be 3.25 million years old.
- An A. robustus skull found to be 1 million years old.