2024 UCONN BIOL 1108 FINAL
EXAM (EXAMS 1&2) WITH
CORRECT ANSWERS
which phylogenetic group includes a common ancestor and all the
descendants of that ancestor? - CORRECT ANSWERS-monophyletic
with the advent of tools to incorporate molecular data, phylogenetic analysis
can be used to: - CORRECT ANSWERS-all of the answer options are correct
when comparing phylogenetic trees showing various hypotheses of
evolutionary relationships between a group of animals, the tree with _____
would be the weakest candidate - CORRECT ANSWERS-the most changes
two taxa which are more closely related to each other than any other taxon
are called: - CORRECT ANSWERS-sister groups
molecular phylogenies show all land plants are a monophyletic group. this
suggests that - CORRECT ANSWERS-there was a single transition from
aquatic to terrestrial habitats
the fossil record provides us with direct evidence of evolutionary history -
CORRECT ANSWERS-true
a phylogenetic tree is a - CORRECT ANSWERS-hypothesis about the
evolutionary history of taxonomic groups
the only evolutionary process that leads to adaptive change - CORRECT
ANSWERS-natural selection
you have spent time working with a population of salamanders. males range
in size form 2-6 cm in length. you realize that the females only mate with the
males that measure less than 3 cm long. you know that body length is
controlled by a single locus in these salamanders. if you measured allele
frequencies for that trait, would you expect to find that this population is in
Hardy Weinberg equilibrium from one generation to the next? - CORRECT
ANSWERS-no
in New Mexico, large expanses of black lava create patches of unique
habitat. in every generation, selection favors the darkest colored fur in
, pocket mice in those habitats because they are best hidden from predators.
the dark fur color of these tiny mammals is an example of: - CORRECT
ANSWERS-directional selection
you have two populations of flowering plants. in these populations floral color
is controlled by one gene. the red allele (Z) is dominant to the white allele
(z). in population 1, 40% of the flowers are red. in population 2, 60% of the
flowers are white. assuming H-W which population has a greater frequency
of the Z allele? (recall p+q and p^2+2pq+q^2) - CORRECT ANSWERS-
neither, they both have the same frequency
in a (H-W equilibrium) population of Supreme Digger beetles living in
Tanisha's backyard, the frequency of dominant yellow winged beetles is
75%. can we determine allele frequencies? why or why not? - CORRECT
ANSWERS-yes, the dominant phenotype can be either YY or Yy, so this
means the frequency of y is 0.50 (the square root of 0.25)
match the concepts to the statements. you may or may not use a concept
more than once or not at all. choose the best concept for each statement. -
CORRECT ANSWERS-drift with bottleneck effect - elephant seals hunted to
near extinction
evolution - change in allele frequencies in a population
gene flow - movement of alleles between populations
drift with founder effect - a few individuals colonize a new island
genetic drift - random change in an allele frequency due to predation
genetic drift - bottleneck and founder effects are types of this
you find that a wild population of bull snakes is not hardy Weinberg
equilibrium. from this information alone, you can determine the mechanism
of evolution operating on the population. - CORRECT ANSWERS-false
the term "N" refers to the number of individuals in a population. in general,
in a sample of "N" individuals, the frequency of an allele is - CORRECT
ANSWERS-the number of occurrences of the allele divided by twice the
number of individuals in the sample
different species of fruit flies occupy each of the islands in the Hawaiian
island chain, a group of volcanic islands that formed one after the other. one
hypothesis for how the different fruit fly species formed, is that, after each
new island was formed, fruit flies from existing islands colonized it and
subsequently diverged. if this hypothesis is correct, it would be an example
EXAM (EXAMS 1&2) WITH
CORRECT ANSWERS
which phylogenetic group includes a common ancestor and all the
descendants of that ancestor? - CORRECT ANSWERS-monophyletic
with the advent of tools to incorporate molecular data, phylogenetic analysis
can be used to: - CORRECT ANSWERS-all of the answer options are correct
when comparing phylogenetic trees showing various hypotheses of
evolutionary relationships between a group of animals, the tree with _____
would be the weakest candidate - CORRECT ANSWERS-the most changes
two taxa which are more closely related to each other than any other taxon
are called: - CORRECT ANSWERS-sister groups
molecular phylogenies show all land plants are a monophyletic group. this
suggests that - CORRECT ANSWERS-there was a single transition from
aquatic to terrestrial habitats
the fossil record provides us with direct evidence of evolutionary history -
CORRECT ANSWERS-true
a phylogenetic tree is a - CORRECT ANSWERS-hypothesis about the
evolutionary history of taxonomic groups
the only evolutionary process that leads to adaptive change - CORRECT
ANSWERS-natural selection
you have spent time working with a population of salamanders. males range
in size form 2-6 cm in length. you realize that the females only mate with the
males that measure less than 3 cm long. you know that body length is
controlled by a single locus in these salamanders. if you measured allele
frequencies for that trait, would you expect to find that this population is in
Hardy Weinberg equilibrium from one generation to the next? - CORRECT
ANSWERS-no
in New Mexico, large expanses of black lava create patches of unique
habitat. in every generation, selection favors the darkest colored fur in
, pocket mice in those habitats because they are best hidden from predators.
the dark fur color of these tiny mammals is an example of: - CORRECT
ANSWERS-directional selection
you have two populations of flowering plants. in these populations floral color
is controlled by one gene. the red allele (Z) is dominant to the white allele
(z). in population 1, 40% of the flowers are red. in population 2, 60% of the
flowers are white. assuming H-W which population has a greater frequency
of the Z allele? (recall p+q and p^2+2pq+q^2) - CORRECT ANSWERS-
neither, they both have the same frequency
in a (H-W equilibrium) population of Supreme Digger beetles living in
Tanisha's backyard, the frequency of dominant yellow winged beetles is
75%. can we determine allele frequencies? why or why not? - CORRECT
ANSWERS-yes, the dominant phenotype can be either YY or Yy, so this
means the frequency of y is 0.50 (the square root of 0.25)
match the concepts to the statements. you may or may not use a concept
more than once or not at all. choose the best concept for each statement. -
CORRECT ANSWERS-drift with bottleneck effect - elephant seals hunted to
near extinction
evolution - change in allele frequencies in a population
gene flow - movement of alleles between populations
drift with founder effect - a few individuals colonize a new island
genetic drift - random change in an allele frequency due to predation
genetic drift - bottleneck and founder effects are types of this
you find that a wild population of bull snakes is not hardy Weinberg
equilibrium. from this information alone, you can determine the mechanism
of evolution operating on the population. - CORRECT ANSWERS-false
the term "N" refers to the number of individuals in a population. in general,
in a sample of "N" individuals, the frequency of an allele is - CORRECT
ANSWERS-the number of occurrences of the allele divided by twice the
number of individuals in the sample
different species of fruit flies occupy each of the islands in the Hawaiian
island chain, a group of volcanic islands that formed one after the other. one
hypothesis for how the different fruit fly species formed, is that, after each
new island was formed, fruit flies from existing islands colonized it and
subsequently diverged. if this hypothesis is correct, it would be an example
