BIO 182 EXAM 2 ASU 2026 ECOLOGY
CONCEPTS WORKBOOK SOLVED QUESTIONS
COMPILATION
◉ artificial selection.
Answer: Breeding organisms with specific traits in order to produce
offspring with identical traits.
◉ irreducible complexity.
Answer: The idea that parts of organisms are so complex and
dependent on one another that they cannot be reduced to something
less complex and still function, providing evidence for Creation.
◉ the intelligent design proponent Michael Behe suggests that
which is an example of 'irreducible complexity'?.
Answer: the human eye
◉ The co-discoverer (along with Charles Darwin) of evolution
through natural selection was:.
Answer: Alfred Russel Wallace
◉ In which animal group can we see a broad spectrum of eye
designs?.
,Answer: mollusca
◉ which modern researcher proposed the radical idea that
mitochondria were once free-living bacteria?.
Answer: lynn margulis
◉ what was the name of the captain aboard the HMS Beagle?.
Answer: robert fitzroy
◉ what kind of fossilized creatures did Darwin see in South
America- influencing him in his growing world-view?.
Answer: -extinct giant sloth
-a gomphothere
-bivalve fossils high in the Andes
-the remains of a fossilized horse
◉ When was the most recent common human ancestor,
'Mitochondrial Eve'?.
Answer: ~150,000 years ago
◉ an example of reproductive isolation caused by genetic
compatability- sterile hybrids.
Answer: liger
,◉ Speciation resulting from a physical barrier (a geographical
barrier such as a mountain or ocean).
Answer: allopatric
◉ which scientific concept did Charles Darwin and Alfred Wallace
independently discover?.
Answer: natural selection
◉ convergent evolution.
Answer: Process by which unrelated organisms independently
evolve similarities when adapting to similar environments
◉ heritable trait or behavior in an organism that aids in its survival
and reproduction in its present environment.
Answer: adaptation
◉ female starlings (a species of bird) that lay clutches of four or five
eggs have more surviving young than those with either larger or
smaller clutches. This is an example:
a) directional selection acting on clutch size
b) stabilizing selection acting on clutch size
c) disruptive selection acting on clutch size
, d) genetic drift acting on clutch size.
Answer: stabilizing selection acting on clutch size
◉ directional selection.
Answer: occurs when natural selection favors one of the extreme
variations of a trait
◉ stabilizing selection.
Answer: form of natural selection by which the center of the curve
remains in its current position; occurs when individuals near the
center of a distribution curve have higher fitness than individuals at
either end
◉ disruptive selection.
Answer: favors individuals at both extremes of the phenotypic range
◉ genetic drift.
Answer: random change in allele frequencies that occurs in small
populations
◉ endangered species with very small populations are especially at
risk of loss of genetic diversity due to.
Answer: genetic drift
CONCEPTS WORKBOOK SOLVED QUESTIONS
COMPILATION
◉ artificial selection.
Answer: Breeding organisms with specific traits in order to produce
offspring with identical traits.
◉ irreducible complexity.
Answer: The idea that parts of organisms are so complex and
dependent on one another that they cannot be reduced to something
less complex and still function, providing evidence for Creation.
◉ the intelligent design proponent Michael Behe suggests that
which is an example of 'irreducible complexity'?.
Answer: the human eye
◉ The co-discoverer (along with Charles Darwin) of evolution
through natural selection was:.
Answer: Alfred Russel Wallace
◉ In which animal group can we see a broad spectrum of eye
designs?.
,Answer: mollusca
◉ which modern researcher proposed the radical idea that
mitochondria were once free-living bacteria?.
Answer: lynn margulis
◉ what was the name of the captain aboard the HMS Beagle?.
Answer: robert fitzroy
◉ what kind of fossilized creatures did Darwin see in South
America- influencing him in his growing world-view?.
Answer: -extinct giant sloth
-a gomphothere
-bivalve fossils high in the Andes
-the remains of a fossilized horse
◉ When was the most recent common human ancestor,
'Mitochondrial Eve'?.
Answer: ~150,000 years ago
◉ an example of reproductive isolation caused by genetic
compatability- sterile hybrids.
Answer: liger
,◉ Speciation resulting from a physical barrier (a geographical
barrier such as a mountain or ocean).
Answer: allopatric
◉ which scientific concept did Charles Darwin and Alfred Wallace
independently discover?.
Answer: natural selection
◉ convergent evolution.
Answer: Process by which unrelated organisms independently
evolve similarities when adapting to similar environments
◉ heritable trait or behavior in an organism that aids in its survival
and reproduction in its present environment.
Answer: adaptation
◉ female starlings (a species of bird) that lay clutches of four or five
eggs have more surviving young than those with either larger or
smaller clutches. This is an example:
a) directional selection acting on clutch size
b) stabilizing selection acting on clutch size
c) disruptive selection acting on clutch size
, d) genetic drift acting on clutch size.
Answer: stabilizing selection acting on clutch size
◉ directional selection.
Answer: occurs when natural selection favors one of the extreme
variations of a trait
◉ stabilizing selection.
Answer: form of natural selection by which the center of the curve
remains in its current position; occurs when individuals near the
center of a distribution curve have higher fitness than individuals at
either end
◉ disruptive selection.
Answer: favors individuals at both extremes of the phenotypic range
◉ genetic drift.
Answer: random change in allele frequencies that occurs in small
populations
◉ endangered species with very small populations are especially at
risk of loss of genetic diversity due to.
Answer: genetic drift
