Exam 2: Humanitys Roots

The famous "Lucy" was a member of which species?

The last common ancestor (LCA) of panins and hominins lived about 6.3 - 5.4 million years ago.

What kinds of tool use have been observed among modern primates (humans excluded)?

Prior to recent finds in Ethiopia and Kenya, ____________________ was the oldest known stone tool industry.

During the late Miocene, much of Africa became ______________ and ________________.

The LCA lived during the miocene.

According to one model, the LCA species split into small groups, which remained _________________, and large groups, which became _______________________.

Natural selection is a relatively simple, but often misunderstood, evolutionary process. How would you explain it, simply yet accurately, to someone who has no previous experience with biology?

Ancient hominins most likely made tools from:

The oldest hominin fossils are found in Asia.

Which of these hominin species was first discovered in East Asia?

Which genus is associated with "robust" features like a sagittal crest and large molars?

Chapter 2 describes members of the genus Paranthropus as our evolutionary____________.

______________________ is most easily seen when populations become isolated from one another. For example, if a small group moves to a new area, the genes present in that group represent only a sample of the total genes present in their original population.

Describe the evolutionary process of genetic drift.

The Oldowan tool industry includes arrowheads.

Describe the concept of mosaic evolution using examples from the text.

A site in the Dikika area of Ethiopia featured animal bones with cut marks dating to ____________________ years ago.

Chapter 2 discusses the ____________________ site at Olduvai Gorge.

Where is the sagittal crest located?