BIOL 3410 (Ecology & Evolution) Exam
2 Review Questions With Verified
Answers
\Q\.1. Individuals vary in phenotype of trait
2. Phenotypic variation is heritable
3. Reproductive success (fitness) is correlated with that phenotypic trait - ANSWERS✔-
conditions of natural selection
\Q\.Evolution via natural selection is inevitable when 3 conditions are met:
1. Individuals vary in ___
2. The phenotype is ___
3. ___ is correlated with that phenotypic trait - ANSWERS✔-Phenotype, Heritable, Fitness
\Q\.Peter and Rosemary Grant did a good job to research _____ using Darwin's finches -
ANSWERS✔-Natural selection
\Q\.Variation between species (divergence in a phylogeny) - ANSWERS✔-Speciation
\Q\.Natural selection occurs due to variation (between/within) species - ANSWERS✔-Within
\Q\.the difference between the mean of the group selected for reproduction and the mean of
the entire population (prior to selection event) - ANSWERS✔-selection differential
,\Q\.Response divided by selection differential - ANSWERS✔-Heritability
\Q\.The difference between the mean of offspring of the group surviving selection, and the
mean population prior to selection event - ANSWERS✔-Response
\Q\.According to DNA analysis how long ago did Darwin's Finches come to the Galápagos
Islands?
A. 11,000 ya
B. 500,000 ya
C. 1 million ya
D. 5 million ya - ANSWERS✔-C. 1 million ya
\Q\.How many years ago did the Galápagos Islands show up?
A. 11,000 ya
B. 500,000 ya
C. 1 million ya
D. 5 million ya - ANSWERS✔-D. 5 million ya
\Q\.What kind of diet-mediated selection have medium ground finches on Daphne Major
experienced?
A. Directional selection for larger beaks
B. Disruptive selection for large/small beaks depending on the year
C. Directional selection for large/small beaks depending on the year
, D. Directional selection for smaller beaks - ANSWERS✔-C. Directional selection for large/small
beaks depending on the year
\Q\.Selection in favor of those within a species that hav a heritable phenotype that increases
fitness - ANSWERS✔-Naturals Selection
\Q\.Type of selection that favors "average" individuals and selects against those on either
extreme - ANSWERS✔-Stabilizing selection
\Q\.Type of selection that favors individuals that fall in the extremes - ANSWERS✔-Disruptive
selection
\Q\.Selection that favors individuals that fall within a single extreme, but not both at the same
time - ANSWERS✔-Directional selection
\Q\.What kind of parasite-mediated selection might Darwins ground finches be experiencing
depending on the fitness effects of mites?
A. Directional selection for larger beaks
B. Stabilizing selection
C. Disruptive selection
D. Directional selection for smaller beaks - ANSWERS✔-B. Stabilizing selection
\Q\.What kind of diet-mediated selection do black-bellied seedcrackers experience?
A. Directional selection for larger beaks
B. Stabilizing selection
2 Review Questions With Verified
Answers
\Q\.1. Individuals vary in phenotype of trait
2. Phenotypic variation is heritable
3. Reproductive success (fitness) is correlated with that phenotypic trait - ANSWERS✔-
conditions of natural selection
\Q\.Evolution via natural selection is inevitable when 3 conditions are met:
1. Individuals vary in ___
2. The phenotype is ___
3. ___ is correlated with that phenotypic trait - ANSWERS✔-Phenotype, Heritable, Fitness
\Q\.Peter and Rosemary Grant did a good job to research _____ using Darwin's finches -
ANSWERS✔-Natural selection
\Q\.Variation between species (divergence in a phylogeny) - ANSWERS✔-Speciation
\Q\.Natural selection occurs due to variation (between/within) species - ANSWERS✔-Within
\Q\.the difference between the mean of the group selected for reproduction and the mean of
the entire population (prior to selection event) - ANSWERS✔-selection differential
,\Q\.Response divided by selection differential - ANSWERS✔-Heritability
\Q\.The difference between the mean of offspring of the group surviving selection, and the
mean population prior to selection event - ANSWERS✔-Response
\Q\.According to DNA analysis how long ago did Darwin's Finches come to the Galápagos
Islands?
A. 11,000 ya
B. 500,000 ya
C. 1 million ya
D. 5 million ya - ANSWERS✔-C. 1 million ya
\Q\.How many years ago did the Galápagos Islands show up?
A. 11,000 ya
B. 500,000 ya
C. 1 million ya
D. 5 million ya - ANSWERS✔-D. 5 million ya
\Q\.What kind of diet-mediated selection have medium ground finches on Daphne Major
experienced?
A. Directional selection for larger beaks
B. Disruptive selection for large/small beaks depending on the year
C. Directional selection for large/small beaks depending on the year
, D. Directional selection for smaller beaks - ANSWERS✔-C. Directional selection for large/small
beaks depending on the year
\Q\.Selection in favor of those within a species that hav a heritable phenotype that increases
fitness - ANSWERS✔-Naturals Selection
\Q\.Type of selection that favors "average" individuals and selects against those on either
extreme - ANSWERS✔-Stabilizing selection
\Q\.Type of selection that favors individuals that fall in the extremes - ANSWERS✔-Disruptive
selection
\Q\.Selection that favors individuals that fall within a single extreme, but not both at the same
time - ANSWERS✔-Directional selection
\Q\.What kind of parasite-mediated selection might Darwins ground finches be experiencing
depending on the fitness effects of mites?
A. Directional selection for larger beaks
B. Stabilizing selection
C. Disruptive selection
D. Directional selection for smaller beaks - ANSWERS✔-B. Stabilizing selection
\Q\.What kind of diet-mediated selection do black-bellied seedcrackers experience?
A. Directional selection for larger beaks
B. Stabilizing selection
