Question 1

Which gene mutation is least likely to impact the protein?​

Accepted Answer

A)  ​aconservative substitution 
B)  ​anon-conservative substitution 
C)  ​an amino acid deletion 
D)  ​an amino acid insertion 
E)  ​all mutations will have the same impact. 
A)  ​aconservative substitution 
B)  ​anon-conservative substitution 
C)  ​an amino acid deletion 
D)  ​an amino acid insertion 
E)  ​all mutations will have the same impact.

Question 2

The five-toed limb of stem reptiles was modified into a limb suitable for digging. This is an exampleof ____.

Accepted Answer

A)  ​convergent evolution 
B)  ​morphological divergence 
C)  ​analogous evolution 
D)  ​morphological convergence 
E)  ​distal modification 
A)  ​convergent evolution 
B)  ​morphological divergence 
C)  ​analogous evolution 
D)  ​morphological convergence 
E)  ​distal modification

Question 3

Four of the following statements about the Poouli are true. Which one is false?​

Accepted Answer

A)  ​It is a honeycreeper. 
B)  ​It is probably extinct. 
C)  ​It is an outlying member of its group. 
D)  ​It is morphologically distinct from others in its group. 
E)  ​It is found in Fiji. 
A)  ​It is a honeycreeper. 
B)  ​It is probably extinct. 
C)  ​It is an outlying member of its group. 
D)  ​It is morphologically distinct from others in its group. 
E)  ​It is found in Fiji.

Question 4

A gene accumulates one mutation every 100 years. If one species splits into two today, how many differences will exist in that gene between the two in 500 years?​

Accepted Answer

A)  ​2 
B)  ​5 
C)  ​10 
D)  ​100 
E)  ​500 
A)  ​2 
B)  ​5 
C)  ​10 
D)  ​100 
E)  ​500

Question 5

Why do scientists favor the clade in which derived traits evolve the fewest times?

Accepted Answer

The evolution of a trait is a rare event

Question 6

For the clade of winged organisms, which of the following would be considered the outgroup? ​

Accepted Answer

A)  insect 
B)  bat 
C)  eagle 
D)  penguin 
E)  honeycreeper 
A)  insect 
B)  bat 
C)  eagle 
D)  penguin 
E)  honeycreeper

Question 7

Birds are thought to have evolved from dinosaurs. In considering birds and comparing them to dinosaurs, which trait would be derived?​

Accepted Answer

A)  brain 
B)  ​legs 
C)  ​eyes 
D)  ​lack of teeth 
E)  ​bones 
A)  brain 
B)  ​legs 
C)  ​eyes 
D)  ​lack of teeth 
E)  ​bones

Question 8

Mutations in genes that affect __________ may cause morphological shifts in a lineage.

Accepted Answer

The answer of Mutations in genes that affect __________ may...

Question 9

Four of these factors have played a part in the extinction of honeycreepers in HawaII. Which one is the exception?​

Accepted Answer

A)  ​loss of habitat 
B)  ​human activities 
C)  ​imported species 
D)  ​depletion of the ozone layer 
E)  ​disease 
A)  ​loss of habitat 
B)  ​human activities 
C)  ​imported species 
D)  ​depletion of the ozone layer 
E)  ​disease

Question 10

Neutral mutations tend to accumulate in DNA at a predictable rate; like the ticks of a(n) __________, they can help researchers estimate how long ago two lineages diverged.

Accepted Answer

The answer of Neutral mutations tend to accumulate in DNA...

Question 11

The Dlx gene encodes a transcription factor that signals clusters of embryonic cells to ____ and gives rise to an appendage.

Accepted Answer

A)  ​fold into the cardiac muscle 
B)  ​protrude from the body 
C)  ​form reproductive structures 
D)  ​induce apoptosis in cells lining the appendages 
E)  ​develop into the immune system 
A)  ​fold into the cardiac muscle 
B)  ​protrude from the body 
C)  ​form reproductive structures 
D)  ​induce apoptosis in cells lining the appendages 
E)  ​develop into the immune system

Question 12

Which explanation is NOT a reason for why Hawaiian honeycreepers are vulnerable to extinction.

Accepted Answer

A)  ​reduction of their habitats 
B)  ​frequent volcanic eruptions 
C)  ​encroachment of humans into their habitats 
D)  ​importation of new predators and competitors into their habitats 
E)  ​warming of their habitats, supporting mosquitoes that carry avian malaria pathogens 
A)  ​reduction of their habitats 
B)  ​frequent volcanic eruptions 
C)  ​encroachment of humans into their habitats 
D)  ​importation of new predators and competitors into their habitats 
E)  ​warming of their habitats, supporting mosquitoes that carry avian malaria pathogens

Question 13

Similar body parts that reflect shared ancestry are called __________.

Accepted Answer

homologous

Question 14

Four of these statements are true about mitochondria. Which one is not true?​

Accepted Answer

A)  ​They have DNA. 
B)  ​Their DNA can experience mutations. 
C)  ​In animals, the mitochondria come from the mother. 
D)  ​They undergo genetic recombination during fertilization. 
E)  ​Their DNA can be used as molecular clock. 
A)  ​They have DNA. 
B)  ​Their DNA can experience mutations. 
C)  ​In animals, the mitochondria come from the mother. 
D)  ​They undergo genetic recombination during fertilization. 
E)  ​Their DNA can be used as molecular clock.

Question 15

The comparison of embryos across species reveals the conservative nature of the genes responsible for ____.

Accepted Answer

A)  ​food procurement 
B)  ​reproductive behavior 
C)  ​embryonic development 
D)  ​embryonic size 
E)  ​embryonic intelligence 
A)  ​food procurement 
B)  ​reproductive behavior 
C)  ​embryonic development 
D)  ​embryonic size 
E)  ​embryonic intelligence

Question 16

Using hair as the derived trait, four of the following organisms fit in the clade. Which one does not fit?

Accepted Answer

A)  whale 
B)  ​crocodile 
C)  ​wolf 
D)  ​elephant 
E)  ​tiger 
A)  whale 
B)  ​crocodile 
C)  ​wolf 
D)  ​elephant 
E)  ​tiger

Question 17

__________ structures are body parts that look alike in different lineages but did not evolve in a common ancestor.

Accepted Answer

The answer of __________ structures are body parts that look...

Question 18

A monophyletic group has how many common ancestors?​

Accepted Answer

A)  ​one 
B)  ​two 
C)  ​three 
D)  ​many 
E)  ​it is variable 
A)  ​one 
B)  ​two 
C)  ​three 
D)  ​many 
E)  ​it is variable

Question 19

Which of the following are examples of homologous structures?​

Accepted Answer

A)  ​whale flipper and cat leg 
B)  ​human eye and octopus eye 
C)  ​bird and insect wings 
D)  ​body shape of sharks and dolphins 
E)  ​penguin wing and fish fin 
A)  ​whale flipper and cat leg 
B)  ​human eye and octopus eye 
C)  ​bird and insect wings 
D)  ​body shape of sharks and dolphins 
E)  ​penguin wing and fish fin

Question 20

A fairly conserved gene is compared between a human, a chimpanzee, a bear and a banana. How would you expect their DNA sequences to relate?​

Accepted Answer

The human and chimpanzee would have very

Exam 18: Organizating Information About Species

Which gene mutation is least likely to impact the protein?​

The five-toed limb of stem reptiles was modified into a limb suitable for digging. This is an exampleof ____.

Four of the following statements about the Poouli are true. Which one is false?​

A gene accumulates one mutation every 100 years. If one species splits into two today, how many differences will exist in that gene between the two in 500 years?​

Why do scientists favor the clade in which derived traits evolve the fewest times?

For the clade of winged organisms, which of the following would be considered the outgroup? ​

Birds are thought to have evolved from dinosaurs. In considering birds and comparing them to dinosaurs, which trait would be derived?​

Mutations in genes that affect __________ may cause morphological shifts in a lineage.

Four of these factors have played a part in the extinction of honeycreepers in HawaII. Which one is the exception?​

Neutral mutations tend to accumulate in DNA at a predictable rate; like the ticks of a(n) __________, they can help researchers estimate how long ago two lineages diverged.

The Dlx gene encodes a transcription factor that signals clusters of embryonic cells to ____ and gives rise to an appendage.

Which explanation is NOT a reason for why Hawaiian honeycreepers are vulnerable to extinction.

Similar body parts that reflect shared ancestry are called __________.

Four of these statements are true about mitochondria. Which one is not true?​

The comparison of embryos across species reveals the conservative nature of the genes responsible for ____.

Using hair as the derived trait, four of the following organisms fit in the clade. Which one does not fit?

__________ structures are body parts that look alike in different lineages but did not evolve in a common ancestor.

A monophyletic group has how many common ancestors?​

Which of the following are examples of homologous structures?​

A fairly conserved gene is compared between a human, a chimpanzee, a bear and a banana. How would you expect their DNA sequences to relate?​

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

Ground Rules of Metabolism

Where It Starts - Photosynthesis

How Cells Release Chemical Energy

Dna Structure and Function

From Dna to Protein

Gene Control

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Lifes Origin and Early Evolution

Viruses - Bacteria - and Archaea

Protists - the Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution - the Invertibrates

Animal Evolution - the Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Filters

Which gene mutation is least likely to impact the protein?

Four of the following statements about the Poouli are true. Which one is false?

A gene accumulates one mutation every 100 years. If one species splits into two today, how many differences will exist in that gene between the two in 500 years?

For the clade of winged organisms, which of the following would be considered the outgroup?

Birds are thought to have evolved from dinosaurs. In considering birds and comparing them to dinosaurs, which trait would be derived?

Four of these factors have played a part in the extinction of honeycreepers in HawaII. Which one is the exception?

Four of these statements are true about mitochondria. Which one is not true?

A monophyletic group has how many common ancestors?

Which of the following are examples of homologous structures?

A fairly conserved gene is compared between a human, a chimpanzee, a bear and a banana. How would you expect their DNA sequences to relate?