Question 1

Phylogenetics uses evolutionary trees called cladograms to arrange species into clades,or related groups,showing all of the descendents of a common ancestor.The branches of the tree are based on all but which of the following?

Accepted Answer

A)  shared derived characteristics
B)  convergent evolution
C)  homologous structures
D)  morphological data
E)  DNA sequencesF) All of the above
G) C) and D)

Question 2

In comparing the number of differences in amino acids for cytochrome c: between a moth and a rattlesnake there are 31 different amino acids in the sequence,between a moth and a dog there are only 25,and there are 6 differences between a dog and a horse.Therefore,

Accepted Answer

A)  this is sufficient evidence to prove the moth is related more to the dog than to the horse.
B)  dogs had to evolve earlier than horses,since moths are more primitive.
C)  evolution used to be considered a unifying theory until biochemical data showed only differences.
D)  added to anatomical similarities and fossil records,this provides additional evidence for constructing a phylogeny or family tree.
E)  biochemical information is not relevant to the evolution of organisms.F) All of the above
G) A) and B)

Question 3

Which type of natural selection increases the frequency of one extreme phenotype?

Accepted Answer

A)  directional
B)  diversifying
C)  stabilizing
D)  disruptive
E)  nonrandomF) C) and D)
G) B) and C)

Question 4

Africa,Asia,South America,and Antarctica share some patterns of primitive (fossil) plants and early reptiles,but do not have similar mammal populations.This therefore

Accepted Answer

A)  casts serious doubts upon the theory of continental drift and fused land masses.
B)  is an unsolved puzzle probably due to the random nature of biological evolution.
C)  suggests that a pattern of land bridges existed at different times in geological history.
D)  suggests that the earlier plants and reptiles evolved while continents were joined but mammals radiated into diverse groups after separation.
E)  suggests that the mammals evolved earlier while continents were joined but plants and reptiles radiated into diverse groups after separation.F) D) and E)
G) B) and E)

Question 5

According to the Hardy-Weinberg equilibrium,in a population in which 1% does NOT have freckles (recessive) ,what percentage of the next population is likely to NOT have freckles?

Accepted Answer

A)  None,since it is a recessive condition.
B)  1%
C)  2%
D)  50%
E)  99%F) B) and E)
G) B) and D)

Question 6

All living organisms share characteristics such as DNA,the molecule that passes information between generations; metabolic processes like glycolysis,and the ability to utilize specific energy sources.This is thought to be due to

Accepted Answer

A)  biological evolution.
B)  limited environmental stimuli.
C)  the presence of transitional forms.
D)  postzygotic isolation.
E)  prezygotic isolation.F) C) and E)
G) A) and E)

Question 7

Which statement is NOT true about the founder effect?

Accepted Answer

A)  It is a form of genetic drift.
B)  It produces a high frequency of some rare alleles in a small isolated population.
C)  Founding members contain a tiny fraction of the alleles found in the original population.
D)  The founder effect occurs when a population is subjected to near extinction and then recovers,so that only a few alleles are left in survivors.
E)  Chance determines which alleles are carried by the original founders.F) B) and C)
G) A) and E)

Exam 27: Evolution of Life

Which statement is NOT true about the founder effect?

Correct Answer
verified

In comparing the number of differences in amino acids for cytochrome c: between a moth and a rattlesnake there are 31 different amino acids in the sequence,between a moth and a dog there are only 25,and there are 6 differences between a dog and a horse.Therefore,

Correct Answer
verified

Phylogenetics uses evolutionary trees called cladograms to arrange species into clades,or related groups,showing all of the descendents of a common ancestor.The branches of the tree are based on all but which of the following?

Correct Answer
verified

Which type of natural selection increases the frequency of one extreme phenotype?

Correct Answer
verified

According to the Hardy-Weinberg equilibrium,in a population in which 1% does NOT have freckles (recessive) ,what percentage of the next population is likely to NOT have freckles?

Correct Answer
verified

All living organisms share characteristics such as DNA,the molecule that passes information between generations; metabolic processes like glycolysis,and the ability to utilize specific energy sources.This is thought to be due to

Correct Answer
verified

Africa,Asia,South America,and Antarctica share some patterns of primitive (fossil) plants and early reptiles,but do not have similar mammal populations.This therefore

Correct Answer
verified

Exam 27: Evolution of Life

Which statement is NOT true about the founder effect?

Correct AnswerverifiedShow Answer

In comparing the number of differences in amino acids for cytochrome c: between a moth and a rattlesnake there are 31 different amino acids in the sequence,between a moth and a dog there are only 25,and there are 6 differences between a dog and a horse.Therefore,

Correct AnswerverifiedShow Answer

Phylogenetics uses evolutionary trees called cladograms to arrange species into clades,or related groups,showing all of the descendents of a common ancestor.The branches of the tree are based on all but which of the following?

Correct AnswerverifiedShow Answer

Which type of natural selection increases the frequency of one extreme phenotype?

Correct AnswerverifiedShow Answer

According to the Hardy-Weinberg equilibrium,in a population in which 1% does NOT have freckles (recessive) ,what percentage of the next population is likely to NOT have freckles?

Correct AnswerverifiedShow Answer

All living organisms share characteristics such as DNA,the molecule that passes information between generations; metabolic processes like glycolysis,and the ability to utilize specific energy sources.This is thought to be due to

Correct AnswerverifiedShow Answer

Africa,Asia,South America,and Antarctica share some patterns of primitive (fossil) plants and early reptiles,but do not have similar mammal populations.This therefore

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified