Chimpanzees are a less evolved than humans b direct

1. Chimpanzees are:
a. Less evolved than humans
b. Direct ancestors of humans
c. The closest living relatives to humans
d. Both a and b
2. Which of the following is a correct statement about human evolution?
Planet of the apes: You probably don’t have any issue distinguishing a human from a chimpanzee, gorilla, or
orangutan. But you might if you were looking at DNA instead of physical traits. The differences you see are caused by
a shockingly tiny proportion of our DNA—who knew that just a few Gs, As, Ts, and Cs could do so much? Answer
questions 3–5 below before you move on to the next level, “Back to skull.”
position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Chimpanzee
Gorilla
Human
Orangutan
–
–
–
–
–
–
–
–
G
T
G
G
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
T
T
A
T
–
–
–
–
T – – G
T – – T
T –
–
G
T –
–
T
– –
– –
– –
– –
– G –
–
–
– G –
–
–
– G –
–
–
– T –
–
–
3. This data set shows all of the nucleotide differences in a 500-base sequence. Approximately what
percentage of DNA do humans have in common with a chimpanzee?
4. The closest living relatives to orangutans are:

The Evolution Lab MISSION 6
E
R
G
E
F
O
R
M
A
T
2
d. Chimpanzees, gorillas, and humans equally
5. True or false: “Gorillas are more closely related to chimpanzees and orangutans than they are to
humans.” Explain your answer.
All members of the hominin group are extinct except one—us, Homo sapiens . In the not-too-distant past, there were
several other Homo species living on Earth; a couple of them lived at the same time as Homo sapiens . There were
also many species of our closest extinct cousins, the Australopithecines, and several other hominin species as well.
Although rarely even close to complete specimens, hominin fossils have told us a great deal about our extinct
relatives. In this level, you’ll explore features of various hominin skulls to learn about some of the things that make us
—and other members of our genus Homo —human. Complete the level and answer questions 6–10 below before
moving on to the final level, “Inside out of Africa.”
6. According to the completed tree, which of the following traits is shared among all species in the
genus Homo, but no others?
P
A
G
E
\*
M