Question 1

Four of these statements about master genes are true.Which statement is not true?

Accepted Answer

A)  They orchestrate layers of development. 
B)  They are highly conserved over evolutionary time. 
C)  Mutations within these are frequently devastating. 
D)  They are highly variable in their sequences between species. 
E)  Mutations usually result in changes in body plan. 
A)  They orchestrate layers of development. 
B)  They are highly conserved over evolutionary time. 
C)  Mutations within these are frequently devastating. 
D)  They are highly variable in their sequences between species. 
E)  Mutations usually result in changes in body plan.

Question 2

What type of genetic material did scientists use to track gene flow in a current population of wildebeest?

Accepted Answer

A)  Chromosomal DNA 
B)  Mitochondrial DNA 
C)  Y-chromosomal analysis 
D)  Ribosomal RNA 
E)  Messenger RNA 
A)  Chromosomal DNA 
B)  Mitochondrial DNA 
C)  Y-chromosomal analysis 
D)  Ribosomal RNA 
E)  Messenger RNA

Question 3

-In comparing a fairly conserved gene in humans,mice,lizards,and tuna,what can you say about their DNA sequences for the gene based on the cladogram provided?

Accepted Answer

A)  The mouse and lizard would have more similar DNA sequences than the mouse and human. 
B)  The human and lizard would have more similar DNA sequences than the human and mouse. 
C)  The mouse and human would share more DNA sequences than the mouse and tuna. 
D)  The tuna and lizard would share more DNA sequences than the human and lizard. 
E)  The tuna and lizard would share less DNA sequences than the human and mouse. 
A)  The mouse and lizard would have more similar DNA sequences than the mouse and human. 
B)  The human and lizard would have more similar DNA sequences than the human and mouse. 
C)  The mouse and human would share more DNA sequences than the mouse and tuna. 
D)  The tuna and lizard would share more DNA sequences than the human and lizard. 
E)  The tuna and lizard would share less DNA sequences than the human and mouse.

Question 4

Body appendages as diverse as crab legs,beetle legs,sea star arms,butterfly wings,fish fins,and mouse feet start out as ____.

Accepted Answer

A)  clusters of cells in the limb buds 
B)  cerebral cells 
C)  cardiac cells 
D)  offshoots of the sperm cell 
E)  offshoots of the egg 
A)  clusters of cells in the limb buds 
B)  cerebral cells 
C)  cardiac cells 
D)  offshoots of the sperm cell 
E)  offshoots of the egg

Question 5

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 6

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 7

Four of these characteristics describing a species play a role in phylogeny.Which one does not?

Accepted Answer

A)  Number of digits 
B)  DNA sequence for a gene 
C)  Amino acid sequence of an enzyme 
D)  Number of petals 
E)  Number of individuals 
A)  Number of digits 
B)  DNA sequence for a gene 
C)  Amino acid sequence of an enzyme 
D)  Number of petals 
E)  Number of individuals

Question 8

Changes in an organism's genome that have no effect on an individual's survival or reproduction are called ____.

Accepted Answer

A)  amino acid substitutions 
B)  deleterious mutations 
C)  Hox genes 
D)  neutral mutations 
E)  mitochondrial DNA 
A)  amino acid substitutions 
B)  deleterious mutations 
C)  Hox genes 
D)  neutral mutations 
E)  mitochondrial DNA

Question 9

A technique used to identify species by matching up sequence differences in a standard region of the genome is called

Accepted Answer

A)  mutation counting. 
B)  genome sequencing. 
C)  DNA barcoding. 
D)  nucleotide matching. 
E)  PCR 
A)  mutation counting. 
B)  genome sequencing. 
C)  DNA barcoding. 
D)  nucleotide matching. 
E)  PCR

Question 10

The convergence in external morphology of sharks,penguins,and porpoises is attributed to

Accepted Answer

A)  reduced genetic variability in these groups. 
B)  selection pressures that are common to these groups. 
C)  reproductive isolation of these groups. 
D)  identical genes in all three groups. 
E)  use and disuse of the limbs. 
A)  reduced genetic variability in these groups. 
B)  selection pressures that are common to these groups. 
C)  reproductive isolation of these groups. 
D)  identical genes in all three groups. 
E)  use and disuse of the limbs.

Question 11

Four of the following statements about the H5N1 virus are true.Which one is false?

Accepted Answer

A)  It is symptomless in pigs. 
B)  It has a high mortality rate in humans. 
C)  It cannot infect birds. 
D)  It moves poorly from human to human. 
E)  It can move between pigs. 
A)  It is symptomless in pigs. 
B)  It has a high mortality rate in humans. 
C)  It cannot infect birds. 
D)  It moves poorly from human to human. 
E)  It can move between pigs.

Question 12

The homeotic gene Hoxc6 is the vertebrate version of ____,which causes the formation of legs in fruit flies.

Accepted Answer

A)  Dlx 
B)  Thoracia 
C)  RHO 
D)  CCR5 
E)  antennapedia 
A)  Dlx 
B)  Thoracia 
C)  RHO 
D)  CCR5 
E)  antennapedia

Question 13

Phylogeny research is LEAST likely to include which type of analysis?

Accepted Answer

A)  Ggenetic 
B)  Anatomical 
C)  Behavioral 
D)  Physiological 
E)  Direct observation of evolution 
A)  Ggenetic 
B)  Anatomical 
C)  Behavioral 
D)  Physiological 
E)  Direct observation of evolution

Question 14

Which organisms are considered most primitive based upon the structure of their limbs?

Accepted Answer

A)  Bats 
B)  Reptiles 
C)  Porpoises 
D)  Penguins 
E)  Birds 
A)  Bats 
B)  Reptiles 
C)  Porpoises 
D)  Penguins 
E)  Birds

Question 15

A clade is a __________ group that consists of an ancestor in which a derived character evolved,together with all of its descendant.

Accepted Answer

The answer of A clade is a __________ group that...

Question 16

The number of neutral mutations that accumulated in the genomes of two lineages can be used as a ___________to estimate how long ago they diverged.

Accepted Answer

A)  mutation rate 
B)  molecular clock 
C)  phylogenetic tree 
D)  evolutionary ruler 
E)  radiometric measure 
A)  mutation rate 
B)  molecular clock 
C)  phylogenetic tree 
D)  evolutionary ruler 
E)  radiometric measure

Question 17

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 18

Expression of the Hoxc6 gene causes ____.

Accepted Answer

A)  ribs to develop on a vertebra 
B)  the development of eyes 
C)  limb bud development 
D)  gill arches to close 
E)  the development of hair 
A)  ribs to develop on a vertebra 
B)  the development of eyes 
C)  limb bud development 
D)  gill arches to close 
E)  the development of hair

Question 19

What is the origin of H5N1 virus?

Accepted Answer

A)  Birds 
B)  Dogs 
C)  Pigs 
D)  Humans 
E)  Cats 
A)  Birds 
B)  Dogs 
C)  Pigs 
D)  Humans 
E)  Cats

Question 20

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

Exam 18: Organizing Information about Species

Four of these statements about master genes are true.Which statement is not true?

What type of genetic material did scientists use to track gene flow in a current population of wildebeest?

-In comparing a fairly conserved gene in humans,mice,lizards,and tuna,what can you say about their DNA sequences for the gene based on the cladogram provided?

Body appendages as diverse as crab legs,beetle legs,sea star arms,butterfly wings,fish fins,and mouse feet start out as ____.

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

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

Four of these characteristics describing a species play a role in phylogeny.Which one does not?

Changes in an organism's genome that have no effect on an individual's survival or reproduction are called ____.

A technique used to identify species by matching up sequence differences in a standard region of the genome is called

The convergence in external morphology of sharks,penguins,and porpoises is attributed to

Four of the following statements about the H5N1 virus are true.Which one is false?

The homeotic gene Hoxc6 is the vertebrate version of ____,which causes the formation of legs in fruit flies.

Phylogeny research is LEAST likely to include which type of analysis?

Which organisms are considered most primitive based upon the structure of their limbs?

A clade is a __________ group that consists of an ancestor in which a derived character evolved,together with all of its descendant.

The number of neutral mutations that accumulated in the genomes of two lineages can be used as a ___________to estimate how long ago they diverged.

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

Expression of the Hoxc6 gene causes ____.

What is the origin of H5N1 virus?

A monophyletic group has how many common ancestors?

Invitation to Biology

Life's Chemical Bases

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

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

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters