PSU BI358 Evolution Exam I Questions With Complete
Solutions
A good example of evolution would be:
1. An animal accumulates epigenetic changes during
development.
2. None of these are evolution.
3. An animal accumulates epigenetic changes during
development.
4. All of these are good examples.
5. Caterpillars become butterflies.
6. A plant doubles its genome to become tetraploid and produces
fertile offspring.
7. Red blood cell counts increase for individuals that move to
higher elevation. Correct Answers 6. A plant doubles it genome
to become tetraploid and produces fertile offspring
A good measure of fitness in Galagos finches would be...
1. Bill depth and length
2. Number of offspring produced
3. Song complexity
4. Only 1 and 2 are true
5. Only 1 and 3 are true
6. Only 2 and 3 are true
7. All 1, 2, and 3 are true Correct Answers 2. Number of
offspring produced
A phylogeny represents:
,1. A method to put organisms into taxonomic groups.
2. An hypothesis of the historical relationships among
organisms.
3. An accurate representation of evolutionary history.
4. Only 1 and 2 are true.
5. Only 1 and 3 are true.
6. Only 2 and 3 are true.
7. All 1, 2, and 3 are true. Correct Answers 2. A hypothesis of
the historical relationships among organisms
Allows for copies of genes to be selected for different functions.
1. Paralogous genes
2. Homoplaisy
3. Gene duplication
4. Orthologous genes
5. Homologous
6. Transition bias
7. Purifying selection Correct Answers 3. Gene duplication
An example of homoplaisy:
1. Traits differing in appearance but derived from the same
ancestral state
2. Traits that are derived from the different recent common
ancestors
3. Shared traits that are derived from one ancestor
4. Branching order of phylogeny
5. Traits that have converged in appearance from different
ancestral states
, 6. Traits that are shared among all the descendants of a common
ancestor
7. None of these Correct Answers 5. Traits that are shared
among all the descendants of a common ancestor
Concerning indels we can say:
1. Are the loss or gain of one or more nucleotides in DNA
sequences.
2. Are the same as translocations.
3. Are more common in microsatellite regions.
4. Only 1 and 2 are true.
5. Only 1 and 3 are true.
6. Only 2 and 3 are true.
7. All 1, 2, and 3 are true. Correct Answers 5. Only 1 and 3 are
true
Epigenetic modifications due to methylation can:
1. Change the phenotype of an organism in one generation.
2. Can be directed by environmental stimuli.
3. Can be inherited and reversed in future generations in plants
but not in animals.
4. Only 1 and 2 are true,
5. Only 1 and 3 are true.
6. Only 2 and 3 are true.
7. All 1, 2, and 3 are true. Correct Answers 7. All 1, 2, and 3 are
true
Evolution in a population may occur due to...
Solutions
A good example of evolution would be:
1. An animal accumulates epigenetic changes during
development.
2. None of these are evolution.
3. An animal accumulates epigenetic changes during
development.
4. All of these are good examples.
5. Caterpillars become butterflies.
6. A plant doubles its genome to become tetraploid and produces
fertile offspring.
7. Red blood cell counts increase for individuals that move to
higher elevation. Correct Answers 6. A plant doubles it genome
to become tetraploid and produces fertile offspring
A good measure of fitness in Galagos finches would be...
1. Bill depth and length
2. Number of offspring produced
3. Song complexity
4. Only 1 and 2 are true
5. Only 1 and 3 are true
6. Only 2 and 3 are true
7. All 1, 2, and 3 are true Correct Answers 2. Number of
offspring produced
A phylogeny represents:
,1. A method to put organisms into taxonomic groups.
2. An hypothesis of the historical relationships among
organisms.
3. An accurate representation of evolutionary history.
4. Only 1 and 2 are true.
5. Only 1 and 3 are true.
6. Only 2 and 3 are true.
7. All 1, 2, and 3 are true. Correct Answers 2. A hypothesis of
the historical relationships among organisms
Allows for copies of genes to be selected for different functions.
1. Paralogous genes
2. Homoplaisy
3. Gene duplication
4. Orthologous genes
5. Homologous
6. Transition bias
7. Purifying selection Correct Answers 3. Gene duplication
An example of homoplaisy:
1. Traits differing in appearance but derived from the same
ancestral state
2. Traits that are derived from the different recent common
ancestors
3. Shared traits that are derived from one ancestor
4. Branching order of phylogeny
5. Traits that have converged in appearance from different
ancestral states
, 6. Traits that are shared among all the descendants of a common
ancestor
7. None of these Correct Answers 5. Traits that are shared
among all the descendants of a common ancestor
Concerning indels we can say:
1. Are the loss or gain of one or more nucleotides in DNA
sequences.
2. Are the same as translocations.
3. Are more common in microsatellite regions.
4. Only 1 and 2 are true.
5. Only 1 and 3 are true.
6. Only 2 and 3 are true.
7. All 1, 2, and 3 are true. Correct Answers 5. Only 1 and 3 are
true
Epigenetic modifications due to methylation can:
1. Change the phenotype of an organism in one generation.
2. Can be directed by environmental stimuli.
3. Can be inherited and reversed in future generations in plants
but not in animals.
4. Only 1 and 2 are true,
5. Only 1 and 3 are true.
6. Only 2 and 3 are true.
7. All 1, 2, and 3 are true. Correct Answers 7. All 1, 2, and 3 are
true
Evolution in a population may occur due to...
