Biol 3410 Exam 1 Questions With Correct
Answers
Evolution - CORRECT ANSWER✔✔-"Change over time"
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Biological Evolution - CORRECT ANSWER✔✔-is any change in the
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inherited traits of a population that occurs from one generation to the
| | | | | | | | | | | |
next
Microevolution - CORRECT ANSWER✔✔-A change in the frequencies of
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alleles in a population (population thinking)
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Macroevolution - CORRECT ANSWER✔✔-Evolution "above" the level of
| | | | | | | |
species (tree thinking)
| |
Mutation - CORRECT ANSWER✔✔-Any change to the genomic sequence
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of an organism
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Natural Selection - CORRECT ANSWER✔✔-Differential survival and
| | | | | | |
reproduction of individuals cause some genetic types to replace others,
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leading to evolution.
| |
,B - CORRECT ANSWER✔✔-Given how natural selection works through
| | | | | | | | |
favoring certain traits and not favoring others, how could a lineage or
| | | | | | | | | | | |
group ever go extinct?
| | |
A.Natural selection is an inherently flawed process in that it allows
| | | | | | | | | | |
harmful mutations to remain in the gene pool of species
| | | | | | | | |
.B.The environment changes more quickly than natural selection can act
| | | | | | | | | |
on populations to adapt.
| | |
C.Living things evolve to become better adapted to the environment, so
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they can also go extinct to make way for new species.
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D.Prey species are often driven to extinction by predation
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Synapomorphy - CORRECT ANSWER✔✔-A derived form of a trait that is
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shared by a group of related species
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A - CORRECT ANSWER✔✔-Cetaceans
| | |
A.all originated from a single common ancestor within the past 50
| | | | | | | | | | |
million years. |
, B.originated from several different ancestral forms that each
| | | | | | | |
transitioned into aquatic forms over the past 50 million years.
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C.originated as a distinct mammalian lineage at the same time that
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other mammals evolved, more than 200 million years ago.
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D.have evolved multiple times over the past 100 million years.
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C - CORRECT ANSWER✔✔-Dolphins have the same set of genes that
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regulate the development of hindlimbs that land mammals have. Why
| | | | | | | | | |
don't dolphins grow hindlimbs?
| | |
A.Dolphins do grow hindlimbs, but other add-on genes turn them into
| | | | | | | | | | |
flippers.
B.Dolphins do not grow hindlimbs because they are not needed in an
| | | | | | | | | | | |
aquatic environment. |
C.Dolphin embryos do grow hindlimb buds, but their development is
| | | | | | | | | |
terminated very early because of a mutation in a regulatory gene.
| | | | | | | | | |
D.The regulatory genes for limb development in dolphins have been
| | | | | | | | | |
completely deactivated. |
Answers
Evolution - CORRECT ANSWER✔✔-"Change over time"
| | | | |
Biological Evolution - CORRECT ANSWER✔✔-is any change in the
| | | | | | | | |
inherited traits of a population that occurs from one generation to the
| | | | | | | | | | | |
next
Microevolution - CORRECT ANSWER✔✔-A change in the frequencies of
| | | | | | | | |
alleles in a population (population thinking)
| | | | |
Macroevolution - CORRECT ANSWER✔✔-Evolution "above" the level of
| | | | | | | |
species (tree thinking)
| |
Mutation - CORRECT ANSWER✔✔-Any change to the genomic sequence
| | | | | | | |
of an organism
| | |
Natural Selection - CORRECT ANSWER✔✔-Differential survival and
| | | | | | |
reproduction of individuals cause some genetic types to replace others,
| | | | | | | | | |
leading to evolution.
| |
,B - CORRECT ANSWER✔✔-Given how natural selection works through
| | | | | | | | |
favoring certain traits and not favoring others, how could a lineage or
| | | | | | | | | | | |
group ever go extinct?
| | |
A.Natural selection is an inherently flawed process in that it allows
| | | | | | | | | | |
harmful mutations to remain in the gene pool of species
| | | | | | | | |
.B.The environment changes more quickly than natural selection can act
| | | | | | | | | |
on populations to adapt.
| | |
C.Living things evolve to become better adapted to the environment, so
| | | | | | | | | | |
they can also go extinct to make way for new species.
| | | | | | | | | |
D.Prey species are often driven to extinction by predation
| | | | | | | |
Synapomorphy - CORRECT ANSWER✔✔-A derived form of a trait that is
| | | | | | | | | | |
shared by a group of related species
| | | | | |
A - CORRECT ANSWER✔✔-Cetaceans
| | |
A.all originated from a single common ancestor within the past 50
| | | | | | | | | | |
million years. |
, B.originated from several different ancestral forms that each
| | | | | | | |
transitioned into aquatic forms over the past 50 million years.
| | | | | | | | |
C.originated as a distinct mammalian lineage at the same time that
| | | | | | | | | | |
other mammals evolved, more than 200 million years ago.
| | | | | | | |
D.have evolved multiple times over the past 100 million years.
| | | | | | | | |
C - CORRECT ANSWER✔✔-Dolphins have the same set of genes that
| | | | | | | | | | |
regulate the development of hindlimbs that land mammals have. Why
| | | | | | | | | |
don't dolphins grow hindlimbs?
| | |
A.Dolphins do grow hindlimbs, but other add-on genes turn them into
| | | | | | | | | | |
flippers.
B.Dolphins do not grow hindlimbs because they are not needed in an
| | | | | | | | | | | |
aquatic environment. |
C.Dolphin embryos do grow hindlimb buds, but their development is
| | | | | | | | | |
terminated very early because of a mutation in a regulatory gene.
| | | | | | | | | |
D.The regulatory genes for limb development in dolphins have been
| | | | | | | | | |
completely deactivated. |
