Question 1

Which of the following does NOT reflect(s) the likely presence of a gene mutation(s) ?

Accepted Answer

A)  Fruit flies subjected to intense radiation breed a wider array of variable offspring.
B)  A chemical leaking from the surface of an old abandoned coal mine alters a regulatory gene so that a cricket nymph develops an extra set of eyes.
C)  The bacteria that cause gonorrhea,a common sexually transmitted disease,have previously been killed by penicillin; however,after continuous usage of the antibiotic,penicillin-resistant strains are now becoming prevalent.
D)  Radiation causes an alteration of a DNA nucleotide sequence which is discovered when mapped,but which appears to be neither increasing nor decreasing in successive generations.
E)  Offspring always have the same coloration as the parents.F) B) and C)
G) All of the above

Question 2

Which of the following mechanisms does NOT result in variation in the gene frequencies from the ancestral population?

Accepted Answer

A)  founder effect
B)  differential reproduction
C)  genetic equilibrium
D)  genetic drift
E)  natural selectionF) A) and C)
G) B) and E)

Question 3

In a cladogram,clades are groups of related organisms.In the past,phylogeneticists built clades using the idea of parsimony,that the pattern that uses the fewest evolutionary changes is the most likely to be correct.Today,with the use of computers and DNA sequences,the explanation that is thought to be the best is

Accepted Answer

A)  one that shows the most changes in nucleotide sequences.
B)  one that eliminates any similar DNA sequences.
C)  one that shows the DNA unique to that species.
D)  one that shows the fewest changes in the nucleotide sequences.
E)  still one that uses the same system of parsimony.F) A) and B)
G) B) and D)

Question 4

Name the isolating mechanisms that exist within nature and indicate which ones are prezygotic and which ones are postzygotic.

Accepted Answer

Prezygotic: habitat isolation,...

Question 5

If you were assigned the task of constructing a cladogram representing the evolutionary relationship between humans,gorillas,tigers,lizards,and sharks,what feature could you use as the shared derived trait?

Accepted Answer

A)  presence of a jaw
B)  presence of hair
C)  give birth to live young
D)  lay eggs
E)  production of milk to nourish their youngF) None of the above
G) C) and E)

Question 6

Lamarck's proposal of the inheritance of acquired characteristics included the idea that

Accepted Answer

A)  the continual stretching of giraffe's necks to reach leaves led to longer necks.
B)  local catastrophes cause mass extinctions of species.
C)  species are only produced through special creation.
D)  species are fixed and unchanging over time.
E)  organisms are acted on by the environment.F) C) and D)
G) A) and D)

Question 7

Which of the following is NOT a method by which the general dates of the geological time scale can be determined?

Accepted Answer

A)  Lower rock layers are older than surface layers.
B)  Common assemblages of indicator fossils occur in layers with primitive layers lower.
C)  Radioisotopes decay at constant rates and the ratio of isotopes-to-stable elements provides a relative age.
D)  Carbon 14 should double in a sample every 5,730 years and so can be used to date organic matter.
E)  Absolute and relative dating methods can both be used.F) A) and B)
G) A) and C)

Question 8

Phylogeny refers to the

Accepted Answer

A)  development of an organism.
B)  evolutionary history of a species.
C)  taxonomic hierarchies of cladistics.
D)  reproductive isolation of species.
E)  naming of organisms.F) A) and C)
G) All of the above

Question 9

The raw material for evolutionary change is

Accepted Answer

A)  gene flow.
B)  genetic drift.
C)  mutation.
D)  nonrandom reproduction.
E)  natural selection.F) A) and D)
G) D) and E)

Question 10

The new model of evolution that proposes that organisms spend most of their time in fairly unchanging form and undergo occasional bursts of speciation is called

Accepted Answer

A)  genetic drift.
B)  phyletic gradualism.
C)  sympatric speciation.
D)  punctuated equilibrium.
E)  the biological species concept.F) D) and E)
G) A) and B)

Question 11

The organisms examined by Darwin on the Galápagos Islands that were most important in his development of the theory of natural selection were

Accepted Answer

A)  rabbits and hares.
B)  plants.
C)  finches.
D)  fish.
E)  monkeys and armadillos.F) A) and B)
G) A) and E)

Question 12

Disruptive selection is described in the text with the case of British land snails.In the grassy fields,the light-banded snails escape bird predators.In the darker forest,the dark snails survive and the light-banded snails are eaten.As long as the snails continue to cruise across the British landscape mating at the same season and having access to each other,why doesn't this "disruptive selection" eventually lead to two separate species?

Accepted Answer

A)  There is no reproductive isolation to prevent gene flow.
B)  They are already two separate species and the intermediate forms are hybrids.
C)  The color forms are probably not genetically determined.
D)  There must be some unknown factor producing an equal stabilizing selection "to hold the species together."
E)  This will result in the formation of two species if given long enough time.F) C) and D)
G) A) and E)

Question 13

If the Hardy-Weinberg equilibrium is met,what is the net effect?

Accepted Answer

A)  evolution leading to a population better adapted to an unchanging environment
B)  evolution leading to a population better adapted to a changing environment
C)  very slow and continuous evolution with no increased adaptation
D)  no evolution because the alleles in the population remain the same
E)  no evolution because the alleles in the population will changeF) B) and E)
G) A) and B)

Question 14

Taxonomy is the branch of systemic biology that studies the evolutionary relatedness among groups of organisms.

Accepted Answer

A) True 
 B)False

Question 15

According to the proposed three-domain system,

Accepted Answer

A)  archaea and eukarya are more closely related than either is to the bacteria.
B)  archaea and bacteria are more closely related than either is to the eukarya.
C)  bacteria and eukarya are more closely related than either is to the archaea.
D)  all three groups arose separately.
E)  All three groups are equally related.F) C) and D)
G) B) and D)

Question 16

If two adjacent populations of the same species show gene flow,then the two populations will

Accepted Answer

A)  become more similar in their gene pools.
B)  become isolated from each other.
C)  develop into different species.
D)  adapt to different conditions and become separate.
E)  become the same single population.F) C) and D)
G) B) and D)

Question 17

If a population goes from an allele frequency of 0.12 A & 0.88 a to 0.23 A & 0.77 a in the course of seven generations,we can conclude that it is evolving.

Accepted Answer

A) True 
 B)False

Question 18

Which pairing of occurrence and date is NOT correct?

Accepted Answer

A)  origin of invertebrates-630 million years ago
B)  origin of life-4.6 billion years ago
C)  origin of eukaryotic cells-2.1 billion years ago
D)  origin of prokaryotic cells-3.5 billion years ago
E)  chordate evolution-545 million years agoF) A) and C)
G) D) and E)

Question 19

Which of the following conditions does NOT contribute to evolution?

Accepted Answer

A)  mutations
B)  gene flow
C)  genetic drift
D)  natural selection
E)  unchanging environmental conditionsF) B) and E)
G) B) and D)

Question 20

What information is contained in the branches of a cladogram?

Accepted Answer

A)  a current species and its descendents
B)  a recent common ancestor and two outgroups
C)  a recent common ancestor and all of its descendents
D)  all of the potential ancestors of a group
E)  all species classified in a particular genusF) A) and B)
G) A) and E)

Exam 27: Evolution of Life

If you were assigned the task of constructing a cladogram representing the evolutionary relationship between humans,gorillas,tigers,lizards,and sharks,what feature could you use as the shared derived trait?

Correct Answer
verified

Which of the following conditions does NOT contribute to evolution?

Correct Answer
verified

The new model of evolution that proposes that organisms spend most of their time in fairly unchanging form and undergo occasional bursts of speciation is called

Correct Answer
verified

The raw material for evolutionary change is

Correct Answer
verified

Name the isolating mechanisms that exist within nature and indicate which ones are prezygotic and which ones are postzygotic.

Correct Answer
verified
Prezygotic: habitat isolation,...
View Answer

Phylogeny refers to the

Correct Answer
verified

Taxonomy is the branch of systemic biology that studies the evolutionary relatedness among groups of organisms.

Correct Answer
verified

According to the proposed three-domain system,

Correct Answer
verified

If a population goes from an allele frequency of 0.12 A & 0.88 a to 0.23 A & 0.77 a in the course of seven generations,we can conclude that it is evolving.

Correct Answer
verified

Correct Answer
verified

Lamarck's proposal of the inheritance of acquired characteristics included the idea that

Correct Answer
verified

If the Hardy-Weinberg equilibrium is met,what is the net effect?

Correct Answer
verified

Which of the following mechanisms does NOT result in variation in the gene frequencies from the ancestral population?

Correct Answer
verified

What information is contained in the branches of a cladogram?

Correct Answer
verified

If two adjacent populations of the same species show gene flow,then the two populations will

Correct Answer
verified

Which of the following is NOT a method by which the general dates of the geological time scale can be determined?

Correct Answer
verified

Which pairing of occurrence and date is NOT correct?

Correct Answer
verified

The organisms examined by Darwin on the Galápagos Islands that were most important in his development of the theory of natural selection were

Correct Answer
verified

Correct Answer
verified

Which of the following does NOT reflect(s) the likely presence of a gene mutation(s) ?

Correct Answer
verified

Exam 27: Evolution of Life

If you were assigned the task of constructing a cladogram representing the evolutionary relationship between humans,gorillas,tigers,lizards,and sharks,what feature could you use as the shared derived trait?

Correct AnswerverifiedShow Answer

Which of the following conditions does NOT contribute to evolution?

Correct AnswerverifiedShow Answer

The new model of evolution that proposes that organisms spend most of their time in fairly unchanging form and undergo occasional bursts of speciation is called

Correct AnswerverifiedShow Answer

The raw material for evolutionary change is

Correct AnswerverifiedShow Answer

Name the isolating mechanisms that exist within nature and indicate which ones are prezygotic and which ones are postzygotic.

Correct AnswerverifiedPrezygotic: habitat isolation,...View AnswerShow Answer

Phylogeny refers to the

Correct AnswerverifiedShow Answer

Taxonomy is the branch of systemic biology that studies the evolutionary relatedness among groups of organisms.

Correct AnswerverifiedShow Answer

According to the proposed three-domain system,

Correct AnswerverifiedShow Answer

If a population goes from an allele frequency of 0.12 A & 0.88 a to 0.23 A & 0.77 a in the course of seven generations,we can conclude that it is evolving.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Lamarck's proposal of the inheritance of acquired characteristics included the idea that

Correct AnswerverifiedShow Answer

If the Hardy-Weinberg equilibrium is met,what is the net effect?

Correct AnswerverifiedShow Answer

Which of the following mechanisms does NOT result in variation in the gene frequencies from the ancestral population?

Correct AnswerverifiedShow Answer

What information is contained in the branches of a cladogram?

Correct AnswerverifiedShow Answer

If two adjacent populations of the same species show gene flow,then the two populations will

Correct AnswerverifiedShow Answer

Which of the following is NOT a method by which the general dates of the geological time scale can be determined?

Correct AnswerverifiedShow Answer

Which pairing of occurrence and date is NOT correct?

Correct AnswerverifiedShow Answer

The organisms examined by Darwin on the Galápagos Islands that were most important in his development of the theory of natural selection were

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following does NOT reflect(s) the likely presence of a gene mutation(s) ?

Correct AnswerverifiedShow Answer

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Prezygotic: habitat isolation,...
View Answer

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