BIO322 EXAM 3 QUESTIONS WITH COMPLETE
SOLUTIONS
______ occurs when paralogs diverge, and they divide the work
initially undertaken by the parental gene before duplication.
Correct Answers Subfunctionalization
A cline is a ... Correct Answers spatial gradient in the
frequency of genotypes and phenotypes
A small population of a species invades an island where the
species is not found. The island population subsequently
diverges from the ancestral population and becomes a new
species. This is an example of ... Correct Answers the
peripheral isolate model of allopatric speciation
A somatic cell is ... Correct Answers a body cell that is
responsible for growth and maintenance
Approximately what percentage of marine species was lost
during the Permian extinction? Correct Answers 80-90%
Changes in ploidy in plants are typically tolerated and have
minor effects on survival or fertility, and it can often lead to
rapid speciation. How are these changes preserved in the next
generation? Correct Answers the ability to self-fertilize enables
the plant to reproduce with itself, preserving the new ploidy
levels
CRISPR/Cas9 was used to remove the ______ gene from a
strain of ______ to show that coloration was controlled by the
, encoded transcription factor. Correct Answers optix;
Heliconius
Economies of scale occur in major transitions when... Correct
Answers groups can perform tasks more efficiently than
individuals
Elevated levels of iridium are found in the geologic layer at the
K-Pg boundary. Is this unusual? Correct Answers Yes. Iridium
is a rare metal on Earth.
Encapsulation of a hypercycle would not be favored when ...
Correct Answers the costs of a membrane exceed the benefits of
the cycle
Eukaryotes share... Correct Answers more transcription- and
translation-associated genes with archaea and more metabolic
genes with bacteria.
Fossil evidence from the Cambrian period indicated a large,
rapid spike in speciation of marine species accompanied by
increases in the number of genera and families. This would
support what model of evolutionary change? Correct Answers
punctuated equilibrium
Guppy populations along a river experience differences in levels
of predation, which in turn, has led to selection for different
traits. Researchers took guppies from two high predation sites
from different river drainages and placed them in the same tank.
They then took the offspring from both 'hybrid' matings and
SOLUTIONS
______ occurs when paralogs diverge, and they divide the work
initially undertaken by the parental gene before duplication.
Correct Answers Subfunctionalization
A cline is a ... Correct Answers spatial gradient in the
frequency of genotypes and phenotypes
A small population of a species invades an island where the
species is not found. The island population subsequently
diverges from the ancestral population and becomes a new
species. This is an example of ... Correct Answers the
peripheral isolate model of allopatric speciation
A somatic cell is ... Correct Answers a body cell that is
responsible for growth and maintenance
Approximately what percentage of marine species was lost
during the Permian extinction? Correct Answers 80-90%
Changes in ploidy in plants are typically tolerated and have
minor effects on survival or fertility, and it can often lead to
rapid speciation. How are these changes preserved in the next
generation? Correct Answers the ability to self-fertilize enables
the plant to reproduce with itself, preserving the new ploidy
levels
CRISPR/Cas9 was used to remove the ______ gene from a
strain of ______ to show that coloration was controlled by the
, encoded transcription factor. Correct Answers optix;
Heliconius
Economies of scale occur in major transitions when... Correct
Answers groups can perform tasks more efficiently than
individuals
Elevated levels of iridium are found in the geologic layer at the
K-Pg boundary. Is this unusual? Correct Answers Yes. Iridium
is a rare metal on Earth.
Encapsulation of a hypercycle would not be favored when ...
Correct Answers the costs of a membrane exceed the benefits of
the cycle
Eukaryotes share... Correct Answers more transcription- and
translation-associated genes with archaea and more metabolic
genes with bacteria.
Fossil evidence from the Cambrian period indicated a large,
rapid spike in speciation of marine species accompanied by
increases in the number of genera and families. This would
support what model of evolutionary change? Correct Answers
punctuated equilibrium
Guppy populations along a river experience differences in levels
of predation, which in turn, has led to selection for different
traits. Researchers took guppies from two high predation sites
from different river drainages and placed them in the same tank.
They then took the offspring from both 'hybrid' matings and
