Many primates have opposability in their big toe in addition to their thumbs

| March 14, 2016

Question
CRITICAL THINKING QUESTIONS-
PRIMATE CHARACTERISITCS.

1. Many primates have opposability in their big toe in addition to their thumbs. How do
you think daily life would be impacted if Homo sapiens had opposability in their big
toes? How do you think daily life would be impacted if Homo sapiens were full-time
quadrupeds instead of fill-time bipeds? Explain your answer.

2. Explain some reasons why humans have been able to expand in number and distribution
to a greater extent than most other animals.

3. A key innovation is some modification in structure or function that permitted a species to
exploit the environment in a more efficient or novel way, compared to ancestral species.
Speculate on what might have been a key innovation in human evolution. Describe how
that innovation might be the basis of an adaptive radiation in environments of the distant
future.

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