Evo Final Exam Questions And Correct
Answers 100% Verified
Select the combination of traits that is not homologous - ANSWER Bat wing and
dragonfly wing
This unicorn cannot live in the desert. It originated at (A) and populations spread around
the desert in the direction of the arrows. Each letter represents a different population. It
took 500,000 years for the unicorn to reach the region where (D) and (E) currently
reside. Which two populations are least likely to be able to mate and produce viable
offspring? - ANSWER D and E
Why do viruses often evolve resistance so readily? - ANSWER viruses have a large
population size, short generation time, and high mutation rates
You are interested in testing whether evolution by natural selection acts on length in a
population of copperhead snakes in the Clemson Forest. You count the number of
offspring produced by 100 copperhead mothers and measure the mother's length. You
find that the largest 20 copperheads had 2 more offspring on average than the smallest
20 copperheads. You record how many offspring survive for a year to find that 100% do.
Based on your results, do you conclude that evolution by natural selection has
occurred? - ANSWER natural selection has occurred but evolution has not
Fossil species often resemble extant species in the same geographic region they are
found. This is: - ANSWER the law of succession
below are results from an experiment selecting on the size of an aloe plant to see if the
trait will evolve. The large plants from the parental generation were crossed to produce
the large line, small plants were crossed to produce the small line and the control line
was produced by crossing plants that were randomly selected. Select the best answer.
ANSWER Plant size evolved in the small line only
,What is the evidence that novel human viruses often evolve from viruses of other
animals and then spill over into humans? - ANWER the genomes of coronaviruses in
other animals are very similar to those that infect humans
Select all three correct choices.
The components of phenotypic variation include - ANWER Genotype by Environmental
Variation
Environmental Variation
Genetic variation
Synonymous substitutions change proteins. - ANWER False
You're studying lemurs and this special lemur has either a ringed-tail or a non-ringed tail
that is encoded by a single gene. Let the A allele be ringed and dominant and the B allele
be non-ringed and recessive.
You have 100 lemurs in a population. 40 have ringed tails and 60 have nonringed tails.
There is no selection, mutation, migration, drift and mating is random. What is the
expected GENOTYPIC frequency in the next generation? - ANSWER 0.16
0.48
0.36
Select all assumptions of a population in Hardy-Weinberg Equilibrium. - ANSWER no
selection
infinite population size
no drift
no mutation
no migration
The following fitnesses are given for three genotypes. What is this fitness scheme an
example of?
Genotype
, w
VV
0.22
VL
1
LL
0.87 - ANSWER overdominance
Inbreeding does not violate Hardy-Weinberg Equilibrium because it does not change
allele frequencies. - ANSWER false
You are studying populations of grasshoppers in South Carolina. A small island in Lake
Keowee has 300 grasshoppers and a nearby mainland population has 1000
grasshoppers. You mark all island individuals with purple paint and all mainland
individuals with orange paint at the beginning of the summer.
The allele frequency at a given locus on the mainland is A=0.8 at the beginning of the
summer.
The allele frequency at a the same locus on the island is A=0.2 at the beginning of the
summer.
At the end of the summer, you find 500 grasshoppers on the island and 200 of them have
orange paint!
What is the expected frequency of allele A on the island at the end of the summer?
p'i = (1- m) (pi) + (m) (pc) - ANSWER.44
Which of the following would decrease the fixation index (FST)? ANSWER high migration
rates between populations
Predict what will happen to the frequency of allele A1 in 500 generations if it starts at 0.5
and if you set the following relative fitness values:
A1A1: 1
A1A2: 0.8
Answers 100% Verified
Select the combination of traits that is not homologous - ANSWER Bat wing and
dragonfly wing
This unicorn cannot live in the desert. It originated at (A) and populations spread around
the desert in the direction of the arrows. Each letter represents a different population. It
took 500,000 years for the unicorn to reach the region where (D) and (E) currently
reside. Which two populations are least likely to be able to mate and produce viable
offspring? - ANSWER D and E
Why do viruses often evolve resistance so readily? - ANSWER viruses have a large
population size, short generation time, and high mutation rates
You are interested in testing whether evolution by natural selection acts on length in a
population of copperhead snakes in the Clemson Forest. You count the number of
offspring produced by 100 copperhead mothers and measure the mother's length. You
find that the largest 20 copperheads had 2 more offspring on average than the smallest
20 copperheads. You record how many offspring survive for a year to find that 100% do.
Based on your results, do you conclude that evolution by natural selection has
occurred? - ANSWER natural selection has occurred but evolution has not
Fossil species often resemble extant species in the same geographic region they are
found. This is: - ANSWER the law of succession
below are results from an experiment selecting on the size of an aloe plant to see if the
trait will evolve. The large plants from the parental generation were crossed to produce
the large line, small plants were crossed to produce the small line and the control line
was produced by crossing plants that were randomly selected. Select the best answer.
ANSWER Plant size evolved in the small line only
,What is the evidence that novel human viruses often evolve from viruses of other
animals and then spill over into humans? - ANWER the genomes of coronaviruses in
other animals are very similar to those that infect humans
Select all three correct choices.
The components of phenotypic variation include - ANWER Genotype by Environmental
Variation
Environmental Variation
Genetic variation
Synonymous substitutions change proteins. - ANWER False
You're studying lemurs and this special lemur has either a ringed-tail or a non-ringed tail
that is encoded by a single gene. Let the A allele be ringed and dominant and the B allele
be non-ringed and recessive.
You have 100 lemurs in a population. 40 have ringed tails and 60 have nonringed tails.
There is no selection, mutation, migration, drift and mating is random. What is the
expected GENOTYPIC frequency in the next generation? - ANSWER 0.16
0.48
0.36
Select all assumptions of a population in Hardy-Weinberg Equilibrium. - ANSWER no
selection
infinite population size
no drift
no mutation
no migration
The following fitnesses are given for three genotypes. What is this fitness scheme an
example of?
Genotype
, w
VV
0.22
VL
1
LL
0.87 - ANSWER overdominance
Inbreeding does not violate Hardy-Weinberg Equilibrium because it does not change
allele frequencies. - ANSWER false
You are studying populations of grasshoppers in South Carolina. A small island in Lake
Keowee has 300 grasshoppers and a nearby mainland population has 1000
grasshoppers. You mark all island individuals with purple paint and all mainland
individuals with orange paint at the beginning of the summer.
The allele frequency at a given locus on the mainland is A=0.8 at the beginning of the
summer.
The allele frequency at a the same locus on the island is A=0.2 at the beginning of the
summer.
At the end of the summer, you find 500 grasshoppers on the island and 200 of them have
orange paint!
What is the expected frequency of allele A on the island at the end of the summer?
p'i = (1- m) (pi) + (m) (pc) - ANSWER.44
Which of the following would decrease the fixation index (FST)? ANSWER high migration
rates between populations
Predict what will happen to the frequency of allele A1 in 500 generations if it starts at 0.5
and if you set the following relative fitness values:
A1A1: 1
A1A2: 0.8
