Question 1

How does the evolutionary species concept differ from the phylogenetic species concept?

Accepted Answer

All of the components of the phylogeneti

Question 2

Which of the following is not a postzygotic isolating mechanism?

Accepted Answer

A) Male gametes are not transferred to the female gametes. 
B) Zygotes die early in embryogenesis. 
C) Hybrids are inviable. 
D) Hybrids are sterile. 
E) Backcross hybrids are inviable. 
A) Male gametes are not transferred to the female gametes. 
B) Zygotes die early in embryogenesis. 
C) Hybrids are inviable. 
D) Hybrids are sterile. 
E) Backcross hybrids are inviable.

Question 3

Two bird species exhibit postzygotic isolation in that half of the hybrids formed between them are sterile.If Haldane's rule applies here,then the individuals that are sterile are likely to be

Accepted Answer

A) female. 
B) young. 
C) male. 
D) old. 
A) female. 
B) young. 
C) male. 
D) old.

Question 4

What do the two diagrams below illustrate,regarding human evolution?

Accepted Answer

A) 
A)  Multiregional hypothesis; 
B)  Out-of-Africa hypothesis 
B) 
A)  Out-of-Africa hypothesis; 
B)  Multiregional hypothesis 
C) 
A)  Coexistence of multiple hominins throughout the evolutionary history of Homo sapiens; 
B)  Existence of a single hominin throughout the evolutionary history of Homo sapiens 
D) 
A)  Existence of a single hominin throughout the evolutionary history of Homo sapiens; 
B)  Coexistence of multiple hominins throughout the evolutionary history of Homo sapiens 
A) 
A)  Multiregional hypothesis; 
B)  Out-of-Africa hypothesis 
B) 
A)  Out-of-Africa hypothesis; 
B)  Multiregional hypothesis 
C) 
A)  Coexistence of multiple hominins throughout the evolutionary history of Homo sapiens; 
B)  Existence of a single hominin throughout the evolutionary history of Homo sapiens 
D) 
A)  Existence of a single hominin throughout the evolutionary history of Homo sapiens; 
B)  Coexistence of multiple hominins throughout the evolutionary history of Homo sapiens

Question 5

The figure above illustrates

Accepted Answer

A) ploidy changes resulting in reproductive isolation. 
B) Haldane's rule. 
C) Dobzhansky-Muller incompatibility. 
D) reproductive isolation through chromosomal rearrangement. 
A) ploidy changes resulting in reproductive isolation. 
B) Haldane's rule. 
C) Dobzhansky-Muller incompatibility. 
D) reproductive isolation through chromosomal rearrangement.

Question 6

What is the advantage of using DNA sequences from many genes to reconstruct the evolutionary history of humans?

Accepted Answer

Each gene produces a tree that reflects

Question 7

How can reproductive isolation in plants be mediated through pollinators?

Accepted Answer

If two different plants are po

Question 8

Which of the following is not a prezygotic isolating mechanism?

Accepted Answer

A) Habitat isolation 
B) Temporal isolation 
C) Hybrid inviability 
D) Behavioral isolation 
E) Gametic incompatibility 
A) Habitat isolation 
B) Temporal isolation 
C) Hybrid inviability 
D) Behavioral isolation 
E) Gametic incompatibility

Question 9

The evolutionary species concept defines a species as

Accepted Answer

A) a group that forms a lineage with a distinct evolutionary fate from other lineages. 
B) phenotypically similar individuals or populations. 
C) groups of actually or potentially interbreeding populations that are reproductively isolated from other such groups. 
D) the smallest monophyletic group distinguished by a shared derived character. 
A) a group that forms a lineage with a distinct evolutionary fate from other lineages. 
B) phenotypically similar individuals or populations. 
C) groups of actually or potentially interbreeding populations that are reproductively isolated from other such groups. 
D) the smallest monophyletic group distinguished by a shared derived character.

Question 10

What was the major transition from archaic hominins to the genus Homo?

Accepted Answer

A) Increase in tooth size 
B) Increase in brain size 
C) Evolution of bipedalism 
D) Evolution of skull ridges 
A) Increase in tooth size 
B) Increase in brain size 
C) Evolution of bipedalism 
D) Evolution of skull ridges

Question 11

Which of the following does not contribute to the evidence for the out-of-Africa hypothesis?

Accepted Answer

A) The gradual divergence of Homo sapiens in different locations 
B) The rapid replacement of other hominins by Homo sapiens approximately 100,000 years ago 
C) Coalescence 
D) The existence of greater mitochondrial diversity in Africa 
E) The interbreeding of humans and Neanderthals 
A) The gradual divergence of Homo sapiens in different locations 
B) The rapid replacement of other hominins by Homo sapiens approximately 100,000 years ago 
C) Coalescence 
D) The existence of greater mitochondrial diversity in Africa 
E) The interbreeding of humans and Neanderthals

Question 12

If the population of the last common ancestor of humans,chimpanzees,and gorillas was very large,and humans split from chimpanzees very quickly after the gorilla lineage diverged,how might this influence the relationship between gene trees and species trees in this clade?

Accepted Answer

Deep coalescence is more likely along sh

Question 13

The A₁ and the A₂ alleles in the diagram above illustrate

Accepted Answer

A) an ancestral polymorphism that is maintained in all current populations. 
B) that a novel allele (A₂) arose only in the chimpanzee lineage. 
C) an ancestral polymorphism that was lost in humans and chimpanzees, with different alleles going to fixation in each of these two species. 
D) how species trees and gene trees are exactly the same. 
A) an ancestral polymorphism that is maintained in all current populations. 
B) that a novel allele (A₂) arose only in the chimpanzee lineage. 
C) an ancestral polymorphism that was lost in humans and chimpanzees, with different alleles going to fixation in each of these two species. 
D) how species trees and gene trees are exactly the same.

Question 14

In the graphs below,what do the axes represent? Which species concept is illustrated by these graphs?

Accepted Answer

The axes are either single phe

Question 15

Resource partitioning occurs

Accepted Answer

A) when the same plants produce different seed types. 
B) infrequently in sympatric speciation. 
C) only in lakes. 
D) when different habitat preferences result in different diets. 
A) when the same plants produce different seed types. 
B) infrequently in sympatric speciation. 
C) only in lakes. 
D) when different habitat preferences result in different diets.

Question 16

In the phylogeny depicted in the figure below,the P species are from the Pacific side and the C species are from the Caribbean side of the Isthmus of Panama.Which of the following is the most likely cause of speciation?

Accepted Answer

A) Sympatric speciation 
B) Parapatric speciation 
C) Allopatric speciation via dispersal across the Isthmus of Panama 
D) Allopatric speciation via isolation when the Isthmus of Panama closed 
A) Sympatric speciation 
B) Parapatric speciation 
C) Allopatric speciation via dispersal across the Isthmus of Panama 
D) Allopatric speciation via isolation when the Isthmus of Panama closed

Question 17

Suppose that we find an example of the peripheral isolate model of allopatric speciation in which a species pair results.One species is the progenitor,and one is the derivative species.How will these two species differ in geographical distribution,genetic diversity,and allele sharing?

Accepted Answer

The progenitor species will likely have

How does the evolutionary species concept differ from the phylogenetic species concept?

Which of the following is not a postzygotic isolating mechanism?

Two bird species exhibit postzygotic isolation in that half of the hybrids formed between them are sterile.If Haldane's rule applies here,then the individuals that are sterile are likely to be

What do the two diagrams below illustrate,regarding human evolution?

The figure above illustrates

What is the advantage of using DNA sequences from many genes to reconstruct the evolutionary history of humans?

How can reproductive isolation in plants be mediated through pollinators?

Which of the following is not a prezygotic isolating mechanism?

The evolutionary species concept defines a species as

What was the major transition from archaic hominins to the genus Homo?

Which of the following does not contribute to the evidence for the out-of-Africa hypothesis?

If the population of the last common ancestor of humans,chimpanzees,and gorillas was very large,and humans split from chimpanzees very quickly after the gorilla lineage diverged,how might this influence the relationship between gene trees and species trees in this clade?

The A₁ and the A₂ alleles in the diagram above illustrate

In the graphs below,what do the axes represent? Which species concept is illustrated by these graphs?

Resource partitioning occurs

In the phylogeny depicted in the figure below,the P species are from the Pacific side and the C species are from the Caribbean side of the Isthmus of Panama.Which of the following is the most likely cause of speciation?

Suppose that we find an example of the peripheral isolate model of allopatric speciation in which a species pair results.One species is the progenitor,and one is the derivative species.How will these two species differ in geographical distribution,genetic diversity,and allele sharing?

An Overview of Evolutionary Biology

Early Evolutionary Ideas and Darwins Insight

Natural Selection

Phylogeny and Evolutionary History

Inferring Phylogeny

Transmission Genetics and the Sources of Genetic Variation

The Genetics of Populations

Evolution in Finite Populations

Evolution at Multiple Loci

Genome Evolution

The Origin and Evolution of Early Life

Major Transitions

Evolution and Development

Extinction and Evolutionary Trends

The Evolution of Sex

Sexual Selection

The Evolution of Sociality

Coevolution

Evolution and Medicine

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Exam 14: Species and Speciation

How does the evolutionary species concept differ from the phylogenetic species concept?

Which of the following is not a postzygotic isolating mechanism?

Two bird species exhibit postzygotic isolation in that half of the hybrids formed between them are sterile.If Haldane's rule applies here,then the individuals that are sterile are likely to be

What do the two diagrams below illustrate,regarding human evolution?

The figure above illustrates

What is the advantage of using DNA sequences from many genes to reconstruct the evolutionary history of humans?

How can reproductive isolation in plants be mediated through pollinators?

Which of the following is not a prezygotic isolating mechanism?

The evolutionary species concept defines a species as

What was the major transition from archaic hominins to the genus Homo?

Which of the following does not contribute to the evidence for the out-of-Africa hypothesis?

If the population of the last common ancestor of humans,chimpanzees,and gorillas was very large,and humans split from chimpanzees very quickly after the gorilla lineage diverged,how might this influence the relationship between gene trees and species trees in this clade?

The A₁ and the A₂ alleles in the diagram above illustrate

In the graphs below,what do the axes represent? Which species concept is illustrated by these graphs?

Resource partitioning occurs

In the phylogeny depicted in the figure below,the P species are from the Pacific side and the C species are from the Caribbean side of the Isthmus of Panama.Which of the following is the most likely cause of speciation?

Suppose that we find an example of the peripheral isolate model of allopatric speciation in which a species pair results.One species is the progenitor,and one is the derivative species.How will these two species differ in geographical distribution,genetic diversity,and allele sharing?

An Overview of Evolutionary Biology

Early Evolutionary Ideas and Darwins Insight

Natural Selection

Phylogeny and Evolutionary History

Inferring Phylogeny

Transmission Genetics and the Sources of Genetic Variation

The Genetics of Populations

Evolution in Finite Populations

Evolution at Multiple Loci

Genome Evolution

The Origin and Evolution of Early Life

Major Transitions

Evolution and Development

Extinction and Evolutionary Trends

The Evolution of Sex

Sexual Selection

The Evolution of Sociality

Coevolution

Evolution and Medicine

Filters