Question 1

Which of the following base pairs would be found in normal DNA?

Accepted Answer

A)  A and T 
B)  G and G 
C)  C and A 
D)  T and C 
E)  All of the above are correct. 
A)  A and T 
B)  G and G 
C)  C and A 
D)  T and C 
E)  All of the above are correct.

Question 2

You examine a gel containing the DNA profile of a mother and her biological child.Only 10 STRs were used to obtain the profile.How many bands on the gel should be identical in size between mother and child?

Accepted Answer

A)  20 
B)  10 
C)  5 
D)  1 
E)  8 
A)  20 
B)  10 
C)  5 
D)  1 
E)  8

Question 3

In humans,a male's 23rd pair of chromosomes are called ___ and ___,which is in contrast to a female's ___ and ___.

Accepted Answer

The answer of In humans,a male's 23rd pair of chromosomes...

Question 4

What is a DNA profile?

Accepted Answer

A)  The sequence of the coding region within a DNA sample 
B)  A unique banding pattern seen on gel electrophoresis corresponding to the non-coding regions of an individual's DNA 
C)  A unique banding pattern seen on gel electrophoresis corresponding to the coding regions of an individual's DNA 
D)  A banding pattern seen on gel electrophoresis, which is usually identical between parent and child 
E)  A technique used by forensic scientists that compares protein sequences among individuals in order to identify suspects 
A)  The sequence of the coding region within a DNA sample 
B)  A unique banding pattern seen on gel electrophoresis corresponding to the non-coding regions of an individual's DNA 
C)  A unique banding pattern seen on gel electrophoresis corresponding to the coding regions of an individual's DNA 
D)  A banding pattern seen on gel electrophoresis, which is usually identical between parent and child 
E)  A technique used by forensic scientists that compares protein sequences among individuals in order to identify suspects

Question 5

Which of the following would give the greatest chance of identifying a person using a DNA profile?

Accepted Answer

A)  5 STR sites 
B)  15 STR sites 
C)  25 STR sites 
D)  There's no difference; anything over 5 is enough. 
E)  There's no difference; anything under 25 is enough. 
A)  5 STR sites 
B)  15 STR sites 
C)  25 STR sites 
D)  There's no difference; anything over 5 is enough. 
E)  There's no difference; anything under 25 is enough.

Question 6

Cells in your kidneys produce different proteins and carry out different tasks than cells in your brain.How is that possible?

Accepted Answer

A)  Kidney and brain cells have completely different DNA. 
B)  Kidney and brain cells have some DNA that's the same and some that's different. 
C)  Kidney and brain cells have the same DNA but use different genes. 
D)  Kidney cells have Mom's DNA, but brain cells have Dad's DNA. 
E)  Kidney cells use only some of the genes in the DNA, but brain cells use all of the genes. 
A)  Kidney and brain cells have completely different DNA. 
B)  Kidney and brain cells have some DNA that's the same and some that's different. 
C)  Kidney and brain cells have the same DNA but use different genes. 
D)  Kidney cells have Mom's DNA, but brain cells have Dad's DNA. 
E)  Kidney cells use only some of the genes in the DNA, but brain cells use all of the genes.

Question 7

You have been asked to verify that you are not the father of a child,and you have gone in for a paternity test.As part of that testing,you were provided the following information regarding your STRs.What does this chart mean?

Accepted Answer

The paternity testing center has examine

Question 8

Why is DNA called a "double helix"?

Accepted Answer

A)  It has two strands of nucleotides twisted around each other. 
B)  It has two strands of nucleotides, folded back and forth like an accordion. 
C)  It has helical bases, arranged together in complementary pairs. 
D)  It has four strands of nucleotides bound together with sugars. 
E)  It has two chromosomes, linked and twisted together. 
A)  It has two strands of nucleotides twisted around each other. 
B)  It has two strands of nucleotides, folded back and forth like an accordion. 
C)  It has helical bases, arranged together in complementary pairs. 
D)  It has four strands of nucleotides bound together with sugars. 
E)  It has two chromosomes, linked and twisted together.

Question 9

Two strands of nucleotides pair up and twist around each other to form the shape of DNA,called a .

Accepted Answer

The answer of Two strands of nucleotides pair up and...

Question 10

Explain how gender is related to the X and Y chromosomes.

Accepted Answer

Females have two X c

Question 11

What are nucleotides?

Accepted Answer

A)  subunits found in proteins 
B)  subunits that combine to make DNA 
C)  molecules made of a sugar, a protein, and a base 
D)  molecules around which chromosomes coil 
E)  machinery the cell uses to copy its DNA 
A)  subunits found in proteins 
B)  subunits that combine to make DNA 
C)  molecules made of a sugar, a protein, and a base 
D)  molecules around which chromosomes coil 
E)  machinery the cell uses to copy its DNA

Question 12

The original strand of DNA used for DNA replication is known as the

Accepted Answer

A)  coding strand. 
B)  nonconservative strand. 
C)  messenger strand. 
D)  template strand. 
E)  transcription strand. 
A)  coding strand. 
B)  nonconservative strand. 
C)  messenger strand. 
D)  template strand. 
E)  transcription strand.

Question 13

For a certain STR,a mother has 7 repeats on one chromosome and 3 repeats on the other chromosome.Her child has 4 repeats on one chromosome and 3 repeats on the other chromosome.How many repeats must the child's father have on at least one chromosome?

Accepted Answer

The answer of For a certain STR,a mother has 7...

Question 14

The gel at right shows the DNA profiles for several individuals.If A is the mother and B is the father,which one of the others could be their child?

Accepted Answer

A)  C 
B)  D 
C)  E 
D)  C, D, and E 
E)  None of the above 
A)  C 
B)  D 
C)  E 
D)  C, D, and E 
E)  None of the above

Question 15

Liver cells and kidney cells do different tasks because they

Accepted Answer

A)  start off with the same DNA, but destroy unnecessary genes. 
B)  start off with the same DNA, but gain different genes from stem cells. 
C)  contain completely different DNA and genes. 
D)  contain the same DNA but use different genes. 
E)  have different sequences of DNA in their genes. 
A)  start off with the same DNA, but destroy unnecessary genes. 
B)  start off with the same DNA, but gain different genes from stem cells. 
C)  contain completely different DNA and genes. 
D)  contain the same DNA but use different genes. 
E)  have different sequences of DNA in their genes.

Question 16

Explain the difference between coding and non-coding regions of DNA.

Accepted Answer

Coding regions of DNA contain genes that

Question 17

PCR amplification of DNA is a useful technique when

Accepted Answer

A)  there is limited sample. 
B)  there is abundant sample. 
C)  there is no other evidence. 
D)  dental evidence is excluded. 
E)  contamination of evidence occurred. 
A)  there is limited sample. 
B)  there is abundant sample. 
C)  there is no other evidence. 
D)  dental evidence is excluded. 
E)  contamination of evidence occurred.

Question 18

DNA polymerase is an enzyme that

Accepted Answer

A)  breaks DNA down into fragments. 
B)  deletes specific regions of DNA. 
C)  makes copies of DNA. 
D)  tightly winds DNA into chromosomes. 
E)  removes sugars from nucleotides to link them together. 
A)  breaks DNA down into fragments. 
B)  deletes specific regions of DNA. 
C)  makes copies of DNA. 
D)  tightly winds DNA into chromosomes. 
E)  removes sugars from nucleotides to link them together.

Question 19

A blood stain collected at a crime scene is believed to belong to a suspect.What would NOT be a problem in using DNA from that sample to conclusively identify the suspect?

Accepted Answer

A)  The suspect is one of three identical triplets. 
B)  The sample is contaminated with DNA from other unknown people. 
C)  The DNA is in good condition, but the amount is small. 
D)  The suspect is missing and no DNA from him/her is available. 
E)  All of the above would prevent identification using DNA. 
A)  The suspect is one of three identical triplets. 
B)  The sample is contaminated with DNA from other unknown people. 
C)  The DNA is in good condition, but the amount is small. 
D)  The suspect is missing and no DNA from him/her is available. 
E)  All of the above would prevent identification using DNA.

Question 20

The nucleotides used in DNA replication during PCR ____ compared to the nucleotides used during DNA replication within a cell.

Accepted Answer

A)  are exactly the same 
B)  are somewhat different 
C)  are completely different 
D)  contain the base U instead of A 
E)  contain the base U instead of T 
A)  are exactly the same 
B)  are somewhat different 
C)  are completely different 
D)  contain the base U instead of A 
E)  contain the base U instead of T

Exam 7: DNA Structure and Replication Biologically Unique

Which of the following base pairs would be found in normal DNA?

You examine a gel containing the DNA profile of a mother and her biological child.Only 10 STRs were used to obtain the profile.How many bands on the gel should be identical in size between mother and child?

In humans,a male's 23rd pair of chromosomes are called ___ and ___,which is in contrast to a female's ___ and ___.

What is a DNA profile?

Which of the following would give the greatest chance of identifying a person using a DNA profile?

Cells in your kidneys produce different proteins and carry out different tasks than cells in your brain.How is that possible?

You have been asked to verify that you are not the father of a child,and you have gone in for a paternity test.As part of that testing,you were provided the following information regarding your STRs.What does this chart mean?

Why is DNA called a "double helix"?

Two strands of nucleotides pair up and twist around each other to form the shape of DNA,called a .

Explain how gender is related to the X and Y chromosomes.

What are nucleotides?

The original strand of DNA used for DNA replication is known as the

For a certain STR,a mother has 7 repeats on one chromosome and 3 repeats on the other chromosome.Her child has 4 repeats on one chromosome and 3 repeats on the other chromosome.How many repeats must the child's father have on at least one chromosome?

The gel at right shows the DNA profiles for several individuals.If A is the mother and B is the father,which one of the others could be their child?

Liver cells and kidney cells do different tasks because they

Explain the difference between coding and non-coding regions of DNA.

PCR amplification of DNA is a useful technique when

DNA polymerase is an enzyme that

A blood stain collected at a crime scene is believed to belong to a suspect.What would NOT be a problem in using DNA from that sample to conclusively identify the suspect?

The nucleotides used in DNA replication during PCR ____ compared to the nucleotides used during DNA replication within a cell.

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

In humans,a male's 23rd pair of chromosomes are called _ and _,which is in contrast to a female's _ and _.