Reference no: EM133471949

This lab assignment is linked to the viewing of the film Great Transitions: The Origin of Humans.

1. Which of the following trends is illustrated by human ancestors over time?

A) An increase in brain size

B) A decrease in body size

C) A reduction in the number of toes

D) An increase in the size of the molars and the canine teeth

2. Which of the following is an anatomical feature that defines humans as bipedal hominids?

A) A hairless face

B) The absence of a prehensile tail

C) Opposable digits on all four limbs

D) A much shorter hip bone, broader front to back, that wraps around the side

3. Which conclusion about human evolution can scientists infer from the existing fossil evidence?

A) Humans and chimps shared a common ancestor around 7 million years ago.

B) Larger brains began evolving around 1.8 million years ago.

C) Humans began using tools at least 1.8 million years ago.

D) Bipedality in hominids evolved at least 4.4 million years ago.

A only

B and D only

B, C and D only

A-D

4. Which conclusion about human evolution can scientists currently infer from molecular (DNA and proteins) evidence?

A) Humans and chimps shared a common ancestor around 7 million years ago.

B) Large brains began evolving around 1.8 million years ago.

C) Humans began using tools around 1.8 million years ago.

D) Bipedality in hominids evolved at least 4.4 million years ago.

A only

B and D only

B, C and D only

A-D

5. Ardipithecus ramidus (Ardi) is a hominid with a combination of chimplike and humanlike characteristics. Describe these characteristics..