Question 1

You read that two populations of hyena are different subspecies. How would these populations compare?

Accepted Answer

A)  They could produce fertile offspring together. 
B)  One group would be much larger than the other group. 
C)  Their mating behavior would be quite different. 
D)  They would have different diets. 
A)  They could produce fertile offspring together. 
B)  One group would be much larger than the other group. 
C)  Their mating behavior would be quite different. 
D)  They would have different diets.

Question 2

What type of reproductive isolation would include closely related species of orchids that never mate in the wild because they bloom at different times?

Accepted Answer

The answer of What type of reproductive isolation would include...

Question 3

-What concept is illustrated by the figure above?

Accepted Answer

A)  gradualism 
B)  hybridization 
C)  punctualism 
D)  polyploidy 
A)  gradualism 
B)  hybridization 
C)  punctualism 
D)  polyploidy

Question 4

Which situation occurs after the creation of a new allele?

Accepted Answer

A)  The gene pool becomes more diverse. 
B)  The gene pool becomes less diverse. 
C)  The gene pool fragments into smaller groups. 
D)  Reproductive isolation always occurs in the group where the mutation occurred. 
A)  The gene pool becomes more diverse. 
B)  The gene pool becomes less diverse. 
C)  The gene pool fragments into smaller groups. 
D)  Reproductive isolation always occurs in the group where the mutation occurred.

Question 5

What causes the existence of superficial differences among groups of humans?

Accepted Answer

A)  temporal isolation 
B)  geographic isolation 
C)  genetic incompatibility 
D)  behavioral isolation 
A)  temporal isolation 
B)  geographic isolation 
C)  genetic incompatibility 
D)  behavioral isolation

Question 6

Apple maggot flies appear to be two separate races. What makes these races different?

Accepted Answer

A)  They look different. 
B)  They eat different foods. 
C)  They have different allele frequencies. 
D)  They mate at different times. 
A)  They look different. 
B)  They eat different foods. 
C)  They have different allele frequencies. 
D)  They mate at different times.

Question 7

Genealogical species are groups that have diverged from a common ancestor but aren't yet reproductively ________.

Accepted Answer

The answer of Genealogical species are groups that have diverged...

Question 8

Which individuals have the greatest fitness in an area where malaria is common?

Accepted Answer

A)  individuals of any genotype who become infected with malaria before the age of five 
B)  individuals homozygous for the sickle cell anemia allele 
C)  individuals homozygous for the normal globin allele 
D)  individuals heterozygous for the normal and sickle cell anemia alleles 
A)  individuals of any genotype who become infected with malaria before the age of five 
B)  individuals homozygous for the sickle cell anemia allele 
C)  individuals homozygous for the normal globin allele 
D)  individuals heterozygous for the normal and sickle cell anemia alleles

Question 9

A small founder population of turtles has established a population on an island with a varied and good habitat that contains ample food. There is very little competition between members. What effect would this low level of competition have on evolution?

Accepted Answer

A)  The population will remain very stable in size, and it won't evolve much. 
B)  The population will grow in size but won't change much. 
C)  The population will grow in size, and many variants will coexist. 
D)  Genetic drift will eliminate most of the population. 
A)  The population will remain very stable in size, and it won't evolve much. 
B)  The population will grow in size but won't change much. 
C)  The population will grow in size, and many variants will coexist. 
D)  Genetic drift will eliminate most of the population.

Question 10

In order to be acted on by sexual selection, what is required of a trait?

Accepted Answer

A)  It must be something that influences mate choice by the opposite sex. 
B)  It must be something that increases survival. 
C)  It must be a male trait. 
D)  It must be a trait that increases fertility. 
A)  It must be something that influences mate choice by the opposite sex. 
B)  It must be something that increases survival. 
C)  It must be a male trait. 
D)  It must be a trait that increases fertility.

Question 11

Where can you find the most genetically diverse populations of humans?

Accepted Answer

A)  Europe 
B)  Central America 
C)  Africa 
D)  Pacific Islands 
A)  Europe 
B)  Central America 
C)  Africa 
D)  Pacific Islands

Question 12

All of the bees in an area are eliminated by disease. This could lead to reproductive isolation of which of the following species in the area?

Accepted Answer

A)  black cherry trees 
B)  red ants 
C)  white-footed mice 
D)  ostrich ferns 
A)  black cherry trees 
B)  red ants 
C)  white-footed mice 
D)  ostrich ferns

Question 13

In what type of population would evolution occur most rapidly?

Accepted Answer

A)  a large population with a large gene pool 
B)  a small population with a relatively diverse gene pool 
C)  a small population with a small gene pool 
D)  a large population with a relatively limited gene pool 
A)  a large population with a large gene pool 
B)  a small population with a relatively diverse gene pool 
C)  a small population with a small gene pool 
D)  a large population with a relatively limited gene pool

Question 14

When geographic isolation occurs, under what conditions might you expect the most rapid speciation?

Accepted Answer

A)  when there is similarity in the food supply in both locations 
B)  when the climate is very different in the two locations 
C)  when the species has a long generation time 
D)  when one of the two groups becomes extinct 
A)  when there is similarity in the food supply in both locations 
B)  when the climate is very different in the two locations 
C)  when the species has a long generation time 
D)  when one of the two groups becomes extinct

Question 15

Why might traits such as skin color be fairly consistent within a racial group, but alleles for skin color aren't consistent?

Accepted Answer

A)  There's no relationship between alleles and skin color. 
B)  Skin color is influenced by many genes, so several different gene pools can produce the same skin color. 
C)  Only one gene is important in skin color, and when analysis is limited to that gene, there's clear evidence of a long separation of groups. 
D)  Few allele variations between groups are just what you would expect if races were genealogical species. 
A)  There's no relationship between alleles and skin color. 
B)  Skin color is influenced by many genes, so several different gene pools can produce the same skin color. 
C)  Only one gene is important in skin color, and when analysis is limited to that gene, there's clear evidence of a long separation of groups. 
D)  Few allele variations between groups are just what you would expect if races were genealogical species.

Question 16

In order to support the hypothesis that two groups are different races, how often would unique alleles appear in one of the groups?

Accepted Answer

A)  in one individual in the population 
B)  in one family line of the population 
C)  in a significant number of members in the population 
D)  in all the members on the population 
A)  in one individual in the population 
B)  in one family line of the population 
C)  in a significant number of members in the population 
D)  in all the members on the population

Question 17

True or false: A genealogical species definition includes fewer organisms than a biological species definition.

Accepted Answer

A) True 
 B)False

Question 18

Which shows the steps of speciation in the correct order?

Accepted Answer

A)  evolutionary changes, geographic isolation, reproductive isolation 
B)  genetic incompatibility, geographic isolation, evolutionary changes 
C)  geographic isolation, evolutionary changes, reproductive isolation 
D)  reproductive isolation, genetic incompatibility, geographic isolation 
A)  evolutionary changes, geographic isolation, reproductive isolation 
B)  genetic incompatibility, geographic isolation, evolutionary changes 
C)  geographic isolation, evolutionary changes, reproductive isolation 
D)  reproductive isolation, genetic incompatibility, geographic isolation

Question 19

What sort of fossil data would support the hypothesis of punctuated equilibrium?

Accepted Answer

A)  fossils that look alike through many layers of sediment 
B)  fossils that look very different through many layers of sediment 
C)  fossils that look alike through layers of sediment, then a layer with many new fossils 
D)  a few layers of sediment with different fossils between layers of sediment without fossils 
A)  fossils that look alike through many layers of sediment 
B)  fossils that look very different through many layers of sediment 
C)  fossils that look alike through layers of sediment, then a layer with many new fossils 
D)  a few layers of sediment with different fossils between layers of sediment without fossils

Question 20

Which example describes mechanical reproductive isolation?

Accepted Answer

A)  Two squirrel populations live on either side of a mountain range. 
B)  Two fly species have differently shaped genitals that prevent interspecies mating. 
C)  Two similar species of sunflowers bloom at different times of the year. 
D)  Individuals from two wildcat species produce infertile offspring when they mate. 
A)  Two squirrel populations live on either side of a mountain range. 
B)  Two fly species have differently shaped genitals that prevent interspecies mating. 
C)  Two similar species of sunflowers bloom at different times of the year. 
D)  Individuals from two wildcat species produce infertile offspring when they mate.

Exam 12: Who Am I Species and Races

You read that two populations of hyena are different subspecies. How would these populations compare?

What type of reproductive isolation would include closely related species of orchids that never mate in the wild because they bloom at different times?

-What concept is illustrated by the figure above?

Which situation occurs after the creation of a new allele?

What causes the existence of superficial differences among groups of humans?

Apple maggot flies appear to be two separate races. What makes these races different?

Genealogical species are groups that have diverged from a common ancestor but aren't yet reproductively ________.

Which individuals have the greatest fitness in an area where malaria is common?

A small founder population of turtles has established a population on an island with a varied and good habitat that contains ample food. There is very little competition between members. What effect would this low level of competition have on evolution?

In order to be acted on by sexual selection, what is required of a trait?

Where can you find the most genetically diverse populations of humans?

All of the bees in an area are eliminated by disease. This could lead to reproductive isolation of which of the following species in the area?

In what type of population would evolution occur most rapidly?

When geographic isolation occurs, under what conditions might you expect the most rapid speciation?

Why might traits such as skin color be fairly consistent within a racial group, but alleles for skin color aren't consistent?

In order to support the hypothesis that two groups are different races, how often would unique alleles appear in one of the groups?

True or false: A genealogical species definition includes fewer organisms than a biological species definition.

Which shows the steps of speciation in the correct order?

What sort of fossil data would support the hypothesis of punctuated equilibrium?

Which example describes mechanical reproductive isolation?

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