BIO150 Exam 4 Study Guide
Approximately how many species have been
1.4 million
described on Earth?
The diversity of organisms
What does evolution explain (two main things)? Their adaptations and patterns
of distribution and abundance
What is the definition of evolution (three words) descent with modification
Both a Pattern and a Process
1) Organisms are related
by descent from
What was Darwin’s major contribution to our
common ancestors
understanding of evolution?
2) Organisms have
changed over time
Natural Selection
1) Be based on evidence from
natural processes that can be
observed and replicated
What three criteria must a scientific explanation
2) Produce findings or hypotheses that
fulfill?
can be confirmed empirically
(tested & falsified)
3) Be open to debate and change
How does convergent evolution provide support Organisms adapting to similar environments
for evolution? should evolve similar morphologies
Describe an example of how evolution is useful Antibiotic resistance, pesticide resistance,
in medicine? Conservation? Agriculture? adaptation
What evidence do we have for the pattern of Species are related because of common descent
evolution? and species changed over time
Biogeography Distribution of species
similarities due to sharing a common ancestor
Homology The forelimbs of vertebrates—including human
arms, bat wings, whale flippers, and dog legs
Approximately how many species have been
1.4 million
described on Earth?
The diversity of organisms
What does evolution explain (two main things)? Their adaptations and patterns
of distribution and abundance
What is the definition of evolution (three words) descent with modification
Both a Pattern and a Process
1) Organisms are related
by descent from
What was Darwin’s major contribution to our
common ancestors
understanding of evolution?
2) Organisms have
changed over time
Natural Selection
1) Be based on evidence from
natural processes that can be
observed and replicated
What three criteria must a scientific explanation
2) Produce findings or hypotheses that
fulfill?
can be confirmed empirically
(tested & falsified)
3) Be open to debate and change
How does convergent evolution provide support Organisms adapting to similar environments
for evolution? should evolve similar morphologies
Describe an example of how evolution is useful Antibiotic resistance, pesticide resistance,
in medicine? Conservation? Agriculture? adaptation
What evidence do we have for the pattern of Species are related because of common descent
evolution? and species changed over time
Biogeography Distribution of species
similarities due to sharing a common ancestor
Homology The forelimbs of vertebrates—including human
arms, bat wings, whale flippers, and dog legs
