BIO 111 Exam 2 Quiz Questions UPDATED ACTUAL Questions And Correct Answers
Terms in this set (100)
Conditional specification Which type of cell differentiation is controlled by cell to cell contact and secreted
molecules?
An ancient archaeon engulfed a bacterium that began How does the theory of endosymbiosis explain the evolution of cellular
living symbiotically with its host organelles?
Bipedalism Which is a key feature of ALL hominin species?
Ability to invaginate the plasma membrane What new property of living things during the proterozoic era lead to the
development of organelles?
Mesoderm From what tissue layer of a developing embryo does the muscle tissue arise?
Endoderm From what tissue layer of the developing embryo does the epithelium lining the
stomach originate?
Cleavage During which developmental stage does the fertilized egg become a blastocyst?
RNA strains with mutations that give them more What did the Bartel and Szostak experiments on the chemical evolution of RNA
enzymatic activity will become more common over time show?
Ectoderm From what tissue layer of a developing embryo does the nervous tissue arise?
Change in beak size in a finch population affected by Which of these would be an example of adaptive natural selection in action?
periodic drought
Anatomical homology The forelimbs of humans, whales, and bats are derived from a common ancestor,
with the same set of bones, but have different structures, what is this an example
of?
Brightly colored male birds dancing for females Which of these would be an example of intersexual selection at work?
Fitness What is the likelihood that a particular genotype will contribute to the gene pool
of future generations?
The tiny internal hips of modern whales Which of these would be an example of a vestigial structure?
Stabilizing In some reef fish being too small means not producing many eggs, but being too
big means not being able to find a good hiding place that you can squeeze into
to hide from predators. What type of natural selection would cause the fish
population to shift toward a medium size between the two extremes?
All organisms share a common ancestor from whom they How does evolution explain the shared molecular characteristics found within the
have diverged over time amazing diversity of life?
, Traits acquired during an animal's lifetime pass to its Which of these statements about evolution is NOT true?
offspring
Random mating Which of these conditions would a population need to be at Hardy-Weinberg
equilibrium (not evolving) for a particular trait?
Diversifying selection If there is a coastal swamp with saltwater seeping into some areas and salt
tolerance becomes more common in individuals of a grass species just in those
areas, that would be an example of what kind of natural selection?
multi-cellular eurkaryotes What organisms first appeared during the Proterozoic era?
neurulation During which stage in development do segments form along the neural tube?
Mesozoic era What was the era in which dinosaurs dominated the Earth?
3,2,4,1 Put these organisms in order of when they appear in evolutionary time: (1) birds,
(2) insects, (3) vertebrates, (4) mammals
Neurulation During which stage in embryonic development does the neural tube form?
ecotoderm above the notochord thickens and folds How does the future spinal cord form in developing human embryos?
together
ectoderm, mesoderm, endoderm, alimentary canal During gastrulation, the _ migrates from the animal to vegetal pole to surround the
embryo, while the _ multiplies and moves inward with the _ to line the future _ of
the embryo.
increased levels of atmospheric oxygen What event in the earth's history coincided with the Cambrian explosion of animal
diversity?
balancing selection A lizard species in Norway has some individuals who are homozygous dominant
for dark brown skin that helps them blend in with their environment, those who are
homozygous recessive are pale yellow and very easy for predators to spot. Those
who are heterozygous are intermediate in color: dark enough to blend in, but
better able to absorb UV radiation through their lighter skin to help produce
vitamin D than the homozygous dominant individuals. What form of natural
selection is this?
natural selection acts on individuals, but only populations Which of these statements about evolution is true?
evolve
females preferring to mate with colorful males You discover a new species of frog in which all males are bright orange with blue
spots, and all females are mossy green. What may be causing this?
ivory poaching of African elephants Which of these is an example of a bottleneck affecting allele frequencies in a
population?
Terms in this set (100)
Conditional specification Which type of cell differentiation is controlled by cell to cell contact and secreted
molecules?
An ancient archaeon engulfed a bacterium that began How does the theory of endosymbiosis explain the evolution of cellular
living symbiotically with its host organelles?
Bipedalism Which is a key feature of ALL hominin species?
Ability to invaginate the plasma membrane What new property of living things during the proterozoic era lead to the
development of organelles?
Mesoderm From what tissue layer of a developing embryo does the muscle tissue arise?
Endoderm From what tissue layer of the developing embryo does the epithelium lining the
stomach originate?
Cleavage During which developmental stage does the fertilized egg become a blastocyst?
RNA strains with mutations that give them more What did the Bartel and Szostak experiments on the chemical evolution of RNA
enzymatic activity will become more common over time show?
Ectoderm From what tissue layer of a developing embryo does the nervous tissue arise?
Change in beak size in a finch population affected by Which of these would be an example of adaptive natural selection in action?
periodic drought
Anatomical homology The forelimbs of humans, whales, and bats are derived from a common ancestor,
with the same set of bones, but have different structures, what is this an example
of?
Brightly colored male birds dancing for females Which of these would be an example of intersexual selection at work?
Fitness What is the likelihood that a particular genotype will contribute to the gene pool
of future generations?
The tiny internal hips of modern whales Which of these would be an example of a vestigial structure?
Stabilizing In some reef fish being too small means not producing many eggs, but being too
big means not being able to find a good hiding place that you can squeeze into
to hide from predators. What type of natural selection would cause the fish
population to shift toward a medium size between the two extremes?
All organisms share a common ancestor from whom they How does evolution explain the shared molecular characteristics found within the
have diverged over time amazing diversity of life?
, Traits acquired during an animal's lifetime pass to its Which of these statements about evolution is NOT true?
offspring
Random mating Which of these conditions would a population need to be at Hardy-Weinberg
equilibrium (not evolving) for a particular trait?
Diversifying selection If there is a coastal swamp with saltwater seeping into some areas and salt
tolerance becomes more common in individuals of a grass species just in those
areas, that would be an example of what kind of natural selection?
multi-cellular eurkaryotes What organisms first appeared during the Proterozoic era?
neurulation During which stage in development do segments form along the neural tube?
Mesozoic era What was the era in which dinosaurs dominated the Earth?
3,2,4,1 Put these organisms in order of when they appear in evolutionary time: (1) birds,
(2) insects, (3) vertebrates, (4) mammals
Neurulation During which stage in embryonic development does the neural tube form?
ecotoderm above the notochord thickens and folds How does the future spinal cord form in developing human embryos?
together
ectoderm, mesoderm, endoderm, alimentary canal During gastrulation, the _ migrates from the animal to vegetal pole to surround the
embryo, while the _ multiplies and moves inward with the _ to line the future _ of
the embryo.
increased levels of atmospheric oxygen What event in the earth's history coincided with the Cambrian explosion of animal
diversity?
balancing selection A lizard species in Norway has some individuals who are homozygous dominant
for dark brown skin that helps them blend in with their environment, those who are
homozygous recessive are pale yellow and very easy for predators to spot. Those
who are heterozygous are intermediate in color: dark enough to blend in, but
better able to absorb UV radiation through their lighter skin to help produce
vitamin D than the homozygous dominant individuals. What form of natural
selection is this?
natural selection acts on individuals, but only populations Which of these statements about evolution is true?
evolve
females preferring to mate with colorful males You discover a new species of frog in which all males are bright orange with blue
spots, and all females are mossy green. What may be causing this?
ivory poaching of African elephants Which of these is an example of a bottleneck affecting allele frequencies in a
population?
