Question 1

STRs are

Accepted Answer

A)  single tandem repeats. 
B)  sequence tandem reactants. 
C)  single technique runs. 
D)  short tandem repeats. 
E)  several tandem repeats. 
A)  single tandem repeats. 
B)  sequence tandem reactants. 
C)  single technique runs. 
D)  short tandem repeats. 
E)  several tandem repeats.

Question 2

DNA is called a double helix because

Accepted Answer

A)  two bases are the rungs. 
B)  the bases are complementary paired. 
C)  two DNA strands twist together. 
D)  one DNA strand binds to a sugar. 
E)  a DNA strand folds into an alpha helix. 
A)  two bases are the rungs. 
B)  the bases are complementary paired. 
C)  two DNA strands twist together. 
D)  one DNA strand binds to a sugar. 
E)  a DNA strand folds into an alpha helix.

Question 3

Find the sequence that would base pair correctly with ATTCGGC.

Accepted Answer

A)  ATTCGGC 
B)  TAAGCCG 
C)  AUUCGGC 
D)  UAAGCCG 
E)  None of the above. 
A)  ATTCGGC 
B)  TAAGCCG 
C)  AUUCGGC 
D)  UAAGCCG 
E)  None of the above.

Question 4

If you start with one copy of a DNA fragment,how many rounds of PCR amplification will it take to end up with a total of 16 copies?

Accepted Answer

A)  1 
B)  4 
C)  7 
D)  10 
E)  15 
A)  1 
B)  4 
C)  7 
D)  10 
E)  15

Question 5

What is the significance of STRs in DNA profiling?

Accepted Answer

A)  STRs vary among different tissues within an individual, so they can be used to determine which organ was the source of the DNA. 
B)  STRs are inherited from only maternal DNA and can track parentage. 
C)  STRs are inherited from only paternal DNA and can track parentage. 
D)  STRs vary in length from person to person, which helps to identify specific individuals. 
E)  STRs code for proteins, therefore they are highly variable among individuals and can help to identify specific individuals. 
A)  STRs vary among different tissues within an individual, so they can be used to determine which organ was the source of the DNA. 
B)  STRs are inherited from only maternal DNA and can track parentage. 
C)  STRs are inherited from only paternal DNA and can track parentage. 
D)  STRs vary in length from person to person, which helps to identify specific individuals. 
E)  STRs code for proteins, therefore they are highly variable among individuals and can help to identify specific individuals.

Question 6

Typically,the pattern for any one STR site is shared by ____ of people.

Accepted Answer

A)  5% to 20% 
B)  2% to 5% 
C)  10% to 15% 
D)  15% to 20% 
E)  greater than 25% 
A)  5% to 20% 
B)  2% to 5% 
C)  10% to 15% 
D)  15% to 20% 
E)  greater than 25%

Question 7

Short tandem repeats are important because they are

Accepted Answer

A)  only found within the coding regions of the DNA. 
B)  DNA sequences that can identify individuals. 
C)  similar even in most unrelated individuals. 
D)  found on only 7 of the 23 chromosome pairs. 
E)  large proteins that can be amplified via gel electrophoresis. 
A)  only found within the coding regions of the DNA. 
B)  DNA sequences that can identify individuals. 
C)  similar even in most unrelated individuals. 
D)  found on only 7 of the 23 chromosome pairs. 
E)  large proteins that can be amplified via gel electrophoresis.

Question 8

What are the four nucleotide bases that make up the "rungs" of the nucleotide ladder of DNA?

Accepted Answer

A)  adenine, thymine, guanine, cytosine 
B)  adenine, uracil, guanine, cytosine 
C)  adenine, thymine, cytosine, phosphate 
D)  adenine, cytosine, nitrogen, phosphate 
E)  adenine, cytosine, sugar, phosphate 
A)  adenine, thymine, guanine, cytosine 
B)  adenine, uracil, guanine, cytosine 
C)  adenine, thymine, cytosine, phosphate 
D)  adenine, cytosine, nitrogen, phosphate 
E)  adenine, cytosine, sugar, phosphate

Question 9

DNA can be visualized as a ladder.Which parts would be the rungs (where you step)and which would be the stringers (the sides where you hold on)?

Accepted Answer

A)  The sugars and bases are rungs, and the phosphates are stringers. 
B)  The phosphates and bases are rungs, and the sugars are stringers. 
C)  The H-bonded sugars are rungs, and the phosphate bases are stringers. 
D)  The bases are rungs, and the sugars and phosphates are stringers. 
E)  The bases are the rungs, and the sugars the stringers. 
A)  The sugars and bases are rungs, and the phosphates are stringers. 
B)  The phosphates and bases are rungs, and the sugars are stringers. 
C)  The H-bonded sugars are rungs, and the phosphate bases are stringers. 
D)  The bases are rungs, and the sugars and phosphates are stringers. 
E)  The bases are the rungs, and the sugars the stringers.

Question 10

You are a juror at a trial and you have been told that the suspect's DNA was found at the crime scene.The DNA came from a sweat-stained shirt and saliva on a cigarette butt.Several other jurors are quite skeptical of this information,adamant in their belief that sweat and saliva are body fluids (not cells)and therefore should not contain DNA.How do you explain the scientific basis of this evidence to them during deliberations in the jury chamber?

Accepted Answer

A)  The jurors are correct; body fluids do not contain cells. 
B)  The jurors are mostly correct; body fluids contain cells but not DNA. 
C)  Body fluids contain a few cells, and thus some DNA. 
D)  Sweat contains DNA, but saliva does not. 
E)  Saliva contains DNA, but sweat does not. 
A)  The jurors are correct; body fluids do not contain cells. 
B)  The jurors are mostly correct; body fluids contain cells but not DNA. 
C)  Body fluids contain a few cells, and thus some DNA. 
D)  Sweat contains DNA, but saliva does not. 
E)  Saliva contains DNA, but sweat does not.

Question 11

Nucleotide bases are noncovalently held together in the DNA helix by .

Accepted Answer

The answer of Nucleotide bases are noncovalently held together in...

Question 12

Choose the statement(s)that correctly describe the organization of DNA. ______ is/are made of ______,and ______ contain(s)many ______

Accepted Answer

A)  DNA; chromosomes; chromosomes; genes 
B)  Chromosomes; DNA; chromosomes; genes 
C)  DNA; genes; genes; chromosomes 
D)  Genes; DNA; chromosomes; gene 
E)  Both B and D 
A)  DNA; chromosomes; chromosomes; genes 
B)  Chromosomes; DNA; chromosomes; genes 
C)  DNA; genes; genes; chromosomes 
D)  Genes; DNA; chromosomes; gene 
E)  Both B and D

Question 13

Whose DNA would be least similar to yours?

Accepted Answer

A)  mother 
B)  father 
C)  mother's brother 
D)  identical Twin 
E)  elder sibling 
A)  mother 
B)  father 
C)  mother's brother 
D)  identical Twin 
E)  elder sibling

Question 14

A parent gives half their DNA to their child.This means that when 10 STRs are studied,at least _____ bands will be identical on a gel comparing one parent and child.

Accepted Answer

A)  5 
B)  10 
C)  20 
D)  more than 20 
E)  5 but no more than 10 
A)  5 
B)  10 
C)  20 
D)  more than 20 
E)  5 but no more than 10

Question 15

What is the name of the laboratory technique used to amplify DNA?

Accepted Answer

A)  DNA replication 
B)  RNA replication 
C)  polymerase chain reaction 
D)  short tandem repetition 
E)  gel electrophoresis 
A)  DNA replication 
B)  RNA replication 
C)  polymerase chain reaction 
D)  short tandem repetition 
E)  gel electrophoresis

Question 16

Explain why a heating step is needed during PCR.

Accepted Answer

Heating helps to "melt" or den

Question 17

Some problems with use of DNA analysis for forensic evidence may occur because of

Accepted Answer

A)  identical twins. 
B)  not enough of a sample. 
C)  contaminated samples. 
D)  degraded samples. 
E)  All of the above. 
A)  identical twins. 
B)  not enough of a sample. 
C)  contaminated samples. 
D)  degraded samples. 
E)  All of the above.

Question 18

You are hired as a research assistant to help determine the genome of a wild onion plant.At the end of this project,you expect to have the

Accepted Answer

A)  sequence of all of its genes. 
B)  sequence of all of its DNA. 
C)  sequence of all of its proteins. 
D)  total amount of RNA, DNA, and protein in its cells. 
E)  number of chromosomes in its nucleus. 
A)  sequence of all of its genes. 
B)  sequence of all of its DNA. 
C)  sequence of all of its proteins. 
D)  total amount of RNA, DNA, and protein in its cells. 
E)  number of chromosomes in its nucleus.

Question 19

What is a genome?

Accepted Answer

A)  the complete set of genetic material encoded within the DNA of an organism 
B)  the total number of base pairs within a DNA sequence 
C)  a short sequence of DNA that codes for a particular characteristic 
D)  the total amount of RNA within an organism 
E)  strands of DNA wound around proteins; humans have 23 pairs 
A)  the complete set of genetic material encoded within the DNA of an organism 
B)  the total number of base pairs within a DNA sequence 
C)  a short sequence of DNA that codes for a particular characteristic 
D)  the total amount of RNA within an organism 
E)  strands of DNA wound around proteins; humans have 23 pairs

Question 20

What is gel electrophoresis?

Accepted Answer

A)  A laboratory technique used to amplify DNA based on the size of the DNA fragment 
B)  A laboratory technique used to separate DNA into coding and non-coding regions 
C)  A laboratory technique used to analyze DNA samples that separates DNA according to the size of the DNA fragment 
D)  A laboratory technique used to analyze DNA samples that separates DNA into chromosomes 
E)  A laboratory technique that stains regions of a chromosome different colors so that an individual may be identified 
A)  A laboratory technique used to amplify DNA based on the size of the DNA fragment 
B)  A laboratory technique used to separate DNA into coding and non-coding regions 
C)  A laboratory technique used to analyze DNA samples that separates DNA according to the size of the DNA fragment 
D)  A laboratory technique used to analyze DNA samples that separates DNA into chromosomes 
E)  A laboratory technique that stains regions of a chromosome different colors so that an individual may be identified

Exam 7: DNA Structure and Replication Biologically Unique

STRs are

DNA is called a double helix because

Find the sequence that would base pair correctly with ATTCGGC.

If you start with one copy of a DNA fragment,how many rounds of PCR amplification will it take to end up with a total of 16 copies?

What is the significance of STRs in DNA profiling?

Typically,the pattern for any one STR site is shared by ____ of people.

Short tandem repeats are important because they are

What are the four nucleotide bases that make up the "rungs" of the nucleotide ladder of DNA?

DNA can be visualized as a ladder.Which parts would be the rungs (where you step)and which would be the stringers (the sides where you hold on)?

Nucleotide bases are noncovalently held together in the DNA helix by .

Choose the statement(s)that correctly describe the organization of DNA. ______ is/are made of ______,and ______ contain(s)many ______

Whose DNA would be least similar to yours?

A parent gives half their DNA to their child.This means that when 10 STRs are studied,at least _____ bands will be identical on a gel comparing one parent and child.

What is the name of the laboratory technique used to amplify DNA?

Explain why a heating step is needed during PCR.

Some problems with use of DNA analysis for forensic evidence may occur because of

You are hired as a research assistant to help determine the genome of a wild onion plant.At the end of this project,you expect to have the

What is a genome?

What is gel electrophoresis?

The Process of Science Java Report

Chemistry and Molecules of Life Mission to Mars

Cell Function and Structure Wonder Drug

Nutrition,metabolism,enzymes the Peanut Butter Project

Energy Flow and Photosynthesis the Future of Fuel

Dietary Energy and Cellular Respiration Supersize Me

Genes to Proteins Medicine From Milk

Cell Division and Mitosis Natures Pharmacy

Mutations and Cancer Fighting Fate

Single-Gene Inheritance and Meiosis Rock for a Cause

Complex Inheritance Qa: Genetics

Stem Cells and Cell Differentiation Grow Your Own

Natural Selection and Adaptation Bugs That Resist Drugs

A: Nonadaptive Evolution and Speciation Urban Evolution

B: Nonadaptive Evolution and Speciation Urban Evolution

Evidence for Evolution a Fish With Fingers

Life on Earth Qa: Evolution

Prokaryotic Diversity Lost City

A: Eukaryotic Diversity Rain Forest Riches

B: Eukaryotic Diversity Rain Forest Riches

Human Evolution Skin Deep

A: Population Ecology on the Tracks of Wolves and Moose

B: Population Ecology on the Tracks of Wolves and Moose

A: Community Ecology Whats Happening to Honey Bees

B: Community Ecology Whats Happening to Honey Bees

A: Ecosystem Ecology the Heat Is on

B: Ecosystem Ecology the Heat Is on

A: Sustainability the Makings of a Green City

B: Sustainability the Makings of a Green City

A: Overview of Physiology Man Versus Mountain

B: Overview of Physiology Man Versus Mountain

Digestive System Drastic Measures

A: Cardiovascular System Death in Bogalusa

B: Cardiovascular System Death in Bogalusa

Respiratory System Peak Performance

A: Central Nervous System Smoke on the Brain

B: Central Nervous System Smoke on the Brain

Reproductive System Too Many Multiples

Immune System Viral Mysteries

A: Plant Physiology

B: Plant Physiology

Filters

Choose the statement(s)that correctly describe the organization of DNA. is/are made of ,and contain(s)many