Question 1

Which scenario is an example of mechanical reproductive isolation?

Accepted Answer

A) two plants that bloom months apart 
B) two flowers that are pollinated by different insects 
C) two mammals that have different habitats 
D) two fish that have incompatible gametes 
E) two birds that have different mating rituals 
A) two plants that bloom months apart 
B) two flowers that are pollinated by different insects 
C) two mammals that have different habitats 
D) two fish that have incompatible gametes 
E) two birds that have different mating rituals B

Question 2

Female fireflies identify males by their flashing patterns, which are often so complicated that signals sent by one species cannot be understood by another species. This reproductive isolating mechanism is called ____.

Accepted Answer

A) ecological isolation 
B) gametic isolation 
C) temporal isolation 
D) behavioral isolation 
E) mechanical isolation 
A) ecological isolation 
B) gametic isolation 
C) temporal isolation 
D) behavioral isolation 
E) mechanical isolation D

Question 3

Match between columns
                        Premises: gametic isolation

Accepted Answer

The Answer of species cannot physically mate and hybrid offspring is...

Question 4

A triploid plant is usually ____ because chromosomes cannot segregate properly during ____.

Accepted Answer

A) not viable; mitosis 
B) sterile; meiosis 
C) sterile; mitosis 
D) not viable; meiosis 
E) not viable; spore formation 
A) not viable; mitosis 
B) sterile; meiosis 
C) sterile; mitosis 
D) not viable; meiosis 
E) not viable; spore formation

Question 5

Unreduced gametes are those that contain additional chromosome numbers. ​

Accepted Answer

A) True 
 B)False

Question 6

A sterile hybrid plant can form a new fertile species if its chromosomes are doubled. This is referred to as ____. ​

Accepted Answer

A) allopatric speciation 
B) cladogenesis 
C) a hybrid zone 
D) anagenesis 
E) sympatric speciation 
A) allopatric speciation 
B) cladogenesis 
C) a hybrid zone 
D) anagenesis 
E) sympatric speciation

Question 7

Postzygotic isolating mechanisms occur when the offspring ____.

Accepted Answer

A) survive to reproductive age 
B) have vigorous health 
C) inherit the same numbers of chromosomes from each parent 
D) inherit different developmental instructions from each parent 
E) have hybrid viability 
A) survive to reproductive age 
B) have vigorous health 
C) inherit the same numbers of chromosomes from each parent 
D) inherit different developmental instructions from each parent 
E) have hybrid viability

Question 8

When allopatric populations reestablish contact upon elimination of a geographical barrier, ____ has occurred. ​

Accepted Answer

A) species clustering 
B) secondary contact 
C) parapatric speciation 
D) sympatric speciation 
E) evolutionary convergence 
A) species clustering 
B) secondary contact 
C) parapatric speciation 
D) sympatric speciation 
E) evolutionary convergence

Question 9

Match between columns
                        Premises: temporal isolation

Accepted Answer

The Answer of hybrid offspring cannot produce gametes and species is...

Question 10

Polyploid plants are often unhealthy compared to diploid plants. ​

Accepted Answer

A) True 
 B)False

Question 11

How did researchers establish the connection between chimpanzees and humans? ​

Accepted Answer

Researchers examined the chromosomes of

Question 12

Polyploidy refers to an individual ____ and occurs most often in ____. ​

Accepted Answer

A) with one or more additional sets of chromosomes; animals 
B) with one or more additional sets of chromosomes; plants 
C) lacking one or more sets of chromosomes; plants 
D) lacking one or more sets of chromosomes; animals 
E) lacking individual chromosomes; animals 
A) with one or more additional sets of chromosomes; animals 
B) with one or more additional sets of chromosomes; plants 
C) lacking one or more sets of chromosomes; plants 
D) lacking one or more sets of chromosomes; animals 
E) lacking individual chromosomes; animals

Question 13

An allopolyploid is ____.

Accepted Answer

A) a polyploid that arose from hybridization 
B) a species that arose parapatrically 
C) an allopatrically arising species 
D) a polyploid arising from a single diploid individual 
E) any sympatrically arising species 
A) a polyploid that arose from hybridization 
B) a species that arose parapatrically 
C) an allopatrically arising species 
D) a polyploid arising from a single diploid individual 
E) any sympatrically arising species

Question 14

With the biological species concept, the process of speciation is frequently defined as the evolution of ____ between populations. ​

Accepted Answer

A) genetic drift 
B) gene flow 
C) reproductive isolation 
D) geographic separation 
E) reproductive inclusion 
A) genetic drift 
B) gene flow 
C) reproductive isolation 
D) geographic separation 
E) reproductive inclusion

Question 15

Eggs have receptors that recognize surface proteins on sperm of their own species. This illustrates ____.

Accepted Answer

A) behavioral isolation 
B) gametic isolation 
C) hybrid breakdown 
D) hybrid inviability 
E) hybrid sterility 
A) behavioral isolation 
B) gametic isolation 
C) hybrid breakdown 
D) hybrid inviability 
E) hybrid sterility

Question 16

Sympatric speciation often occurs in animals through polyploidy. ​

Accepted Answer

A) True 
 B)False

Question 17

Match between columns
                        Premises: all individuals of a species share measurable traits that distinguish them other species

Accepted Answer

The Answer of allopolyploidy and species cluster and phylogenetic species is...

Question 18

Hybrid organisms frequently die as embryos or at an early age, a phenomenon called hybrid breakdown. ​

Accepted Answer

A) True 
 B)False

Question 19

A plant with a very small tubular type of flower that cannot be pollinated by a large honeybee is exhibiting which prezygotic isolating mechanism? ​

Accepted Answer

A) behavioral 
B) ecological 
C) gametic 
D) mechanical 
E) temporal 
A) behavioral 
B) ecological 
C) gametic 
D) mechanical 
E) temporal

Question 20

Bread wheat (2 n =42), which is a staple food for about a third of the world's population, evolved from two wheat-like ancestors (both 2 n =42); therefore, bread wheat is a ____ organism. ​

Accepted Answer

A) diploid 
B) hexaploid 
C) triploid 
D) tetraploi 
A) diploid 
B) hexaploid 
C) triploid 
D) tetraploi

Exam 22: Speciation

Which scenario is an example of mechanical reproductive isolation?

Female fireflies identify males by their flashing patterns, which are often so complicated that signals sent by one species cannot be understood by another species. This reproductive isolating mechanism is called ____.

A triploid plant is usually ____ because chromosomes cannot segregate properly during ____.

Unreduced gametes are those that contain additional chromosome numbers. ​

A sterile hybrid plant can form a new fertile species if its chromosomes are doubled. This is referred to as ____. ​

Postzygotic isolating mechanisms occur when the offspring ____.

When allopatric populations reestablish contact upon elimination of a geographical barrier, ____ has occurred. ​

Polyploid plants are often unhealthy compared to diploid plants. ​

How did researchers establish the connection between chimpanzees and humans? ​

Polyploidy refers to an individual ____ and occurs most often in ____. ​

An allopolyploid is ____.

With the biological species concept, the process of speciation is frequently defined as the evolution of ____ between populations. ​

Eggs have receptors that recognize surface proteins on sperm of their own species. This illustrates ____.

Sympatric speciation often occurs in animals through polyploidy. ​

Hybrid organisms frequently die as embryos or at an early age, a phenomenon called hybrid breakdown. ​

A plant with a very small tubular type of flower that cannot be pollinated by a large honeybee is exhibiting which prezygotic isolating mechanism? ​

Bread wheat (2 n =42), which is a staple food for about a third of the world's population, evolved from two wheat-like ancestors (both 2 n =42); therefore, bread wheat is a ____ organism. ​

Introduction to Biological Concepts and Research

Life, Chemistry, and Water

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Energy, Enzymes, and Biological Reactions

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

DNA Structure, Replication, and Organization

From DNA to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technologies: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Paleobiology and Macroevolution

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Protists

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Transport in Plants

Plant Nutrition

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Gas Exchange: the Respiratory System

Animal Nutrition

Regulating the Internal Environment

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

Filters

A triploid plant is usually because chromosomes cannot segregate properly during .

Unreduced gametes are those that contain additional chromosome numbers.

A sterile hybrid plant can form a new fertile species if its chromosomes are doubled. This is referred to as ____.

When allopatric populations reestablish contact upon elimination of a geographical barrier, ____ has occurred.

Polyploid plants are often unhealthy compared to diploid plants.

How did researchers establish the connection between chimpanzees and humans?

Polyploidy refers to an individual and occurs most often in .

With the biological species concept, the process of speciation is frequently defined as the evolution of ____ between populations.

Sympatric speciation often occurs in animals through polyploidy.

Hybrid organisms frequently die as embryos or at an early age, a phenomenon called hybrid breakdown.

A plant with a very small tubular type of flower that cannot be pollinated by a large honeybee is exhibiting which prezygotic isolating mechanism?

Bread wheat (2 n =42), which is a staple food for about a third of the world's population, evolved from two wheat-like ancestors (both 2 n =42); therefore, bread wheat is a ____ organism.