Question 1

Which of the following is/are FALSE about genes?

Accepted Answer

A) Genes are located on chromosomes. 
B) Genes come in variants known as alleles. 
C) Genes always encode protein products. 
D) All of the answer options are correct. 
E) None of the answer options are correct. 
A) Genes are located on chromosomes. 
B) Genes come in variants known as alleles. 
C) Genes always encode protein products. 
D) All of the answer options are correct. 
E) None of the answer options are correct. C

Question 2

Wild cats (Felis silvestris)and common mice (Mus musculus)are diploid.In wild cats 2n = 38,while in common mice 2n = 40.Based on this information,we can conclude that wild cat cells have:

Accepted Answer

A) less DNA than common mouse cells. 
B) smaller genomes than common mouse cells. 
C) fewer DNA molecules than common mouse cells. 
D) fewer genes than common mouse cells. 
E) fewer sets of chromosomes than common mouse cells. 
A) less DNA than common mouse cells. 
B) smaller genomes than common mouse cells. 
C) fewer DNA molecules than common mouse cells. 
D) fewer genes than common mouse cells. 
E) fewer sets of chromosomes than common mouse cells. C

Question 3

Arabidopsis thaliana is a diploid plant model organism with 2n = 10.
a)How many copies of each gene does each Arabidopsis thaliana cell have?
b)How many sets of chromosomes does the nucleus of an Arabidopsis thaliana leaf cell contain?
c)How many pairs of homologous chromosomes does the nucleus of an Arabidopsis thaliana leaf cell contain?

Accepted Answer

a)2 b)2 c)5

Question 4

Which of the following is a component of DNA?

Accepted Answer

A) alanine 
B) arginine 
C) cysteine 
D) guanidine 
E) tyrosine 
A) alanine 
B) arginine 
C) cysteine 
D) guanidine 
E) tyrosine

Question 5

A gene is transcribed into an mRNA,and this mRNA is 110 nucleotides long.Which of the following proteins could it encode?

Accepted Answer

A) an enzyme that is 330 amino acids long 
B) a ribosomal protein that is 360 amino acids long 
C) a regulatory protein that is 36 amino acids long 
D) a signaling protein that is 10 amino acids long 
E) a structural protein that is 110 amino acids long 
A) an enzyme that is 330 amino acids long 
B) a ribosomal protein that is 360 amino acids long 
C) a regulatory protein that is 36 amino acids long 
D) a signaling protein that is 10 amino acids long 
E) a structural protein that is 110 amino acids long

Question 6

Explain what it means to say that the genetic code is redundant.How does this redundancy help protect against mutations?

Accepted Answer

The genetic code is redundant because so

Question 7

Which of the following is a correct representation of the central dogma?

Accepted Answer

A) RNA → DNA → protein 
B) protein → DNA → RNA 
C) DNA → RNA → protein 
D) DNA → protein → DNA 
E) None of the answer options are correct. 
A) RNA → DNA → protein 
B) protein → DNA → RNA 
C) DNA → RNA → protein 
D) DNA → protein → DNA 
E) None of the answer options are correct.

Question 8

Using a concept map,indicate all the relationships that exist among the following: chromosomes,DNA,genes,genomes,proteins,histones,chromatin,nucleus,and mitochondria.

Accepted Answer

Example:
- chromosomes: 
[are

Question 9

Which of the following features make a species suitable as a model organism?

Accepted Answer

A) small organism 
B) short generation time 
C) small genome 
D) produce large number of offspring 
E) All of the answer options are correct. 
A) small organism 
B) short generation time 
C) small genome 
D) produce large number of offspring 
E) All of the answer options are correct.

Question 10

Using molecular techniques,researchers have knocked out both copies of gene "G" in a series of genetically identical mouse embryos.These mice develop normally,except for their forelimbs,which are missing several small bones.What can be concluded from the results of this experiment?

Accepted Answer

A) Gene "G" encodes a protein that is a crucial component of the forelimbs' small bones in mice. 
B) Gene "G" encodes a protein that is normally only present in the forelimb cells of developing mice. 
C) Gene "G" is necessary for proper development of the forelimbs' small bones in mice. 
D) Gene "G" is normally only present in the forelimb cells of developing mice. 
E) Gene "G" is normally only transcribed in the forelimb cells of developing mice. 
A) Gene "G" encodes a protein that is a crucial component of the forelimbs' small bones in mice. 
B) Gene "G" encodes a protein that is normally only present in the forelimb cells of developing mice. 
C) Gene "G" is necessary for proper development of the forelimbs' small bones in mice. 
D) Gene "G" is normally only present in the forelimb cells of developing mice. 
E) Gene "G" is normally only transcribed in the forelimb cells of developing mice.

Question 11

The early 1900s was an important period for genetics due to which of the following major events?

Accepted Answer

A) the rediscovery of Gregor Mendel's scientific findings 
B) Watson and Crick solving the structure of DNA 
C) Walter Sutton and Theodore Boveri hypothesizing that chromosomes are the hereditary elements 
D) All of the answer options are correct. 
E) the rediscovery of Gregor Mendel's scientific findings and Walter Sutton and Theodore Boveri hypothesizing that chromosomes are the hereditary elements 
A) the rediscovery of Gregor Mendel's scientific findings 
B) Watson and Crick solving the structure of DNA 
C) Walter Sutton and Theodore Boveri hypothesizing that chromosomes are the hereditary elements 
D) All of the answer options are correct. 
E) the rediscovery of Gregor Mendel's scientific findings and Walter Sutton and Theodore Boveri hypothesizing that chromosomes are the hereditary elements

Question 12

How many different DNA molecules that are eight-nucleotide pairs long are theoretically possible?

Accepted Answer

A) 24 
B) 32 
C) 64 
D) 256 
E) 65,536 
A) 24 
B) 32 
C) 64 
D) 256 
E) 65,536

Question 13

Mutations are often viewed as negative events,and they are nearly always bad for an organism.Paradoxically,without mutations there would be no evolution,and so they are essential.Explain how this is so.

Accepted Answer

Variation is introduced.So eve

Question 14

Which of the following is/are TRUE of the DNA structure solved by Watson and Crick?

Accepted Answer

A) It is a double-helical structure. 
B) Sugar-phosphate backbone is always toward the outside of the DNA. 
C) There are three hydrogen bonds between A and T and two hydrogen bonds between C and G. 
D) All of the answer options are correct. 
E) It is a double-helical structure with the sugar-phosphate backbone always toward the outside of the DNA. 
A) It is a double-helical structure. 
B) Sugar-phosphate backbone is always toward the outside of the DNA. 
C) There are three hydrogen bonds between A and T and two hydrogen bonds between C and G. 
D) All of the answer options are correct. 
E) It is a double-helical structure with the sugar-phosphate backbone always toward the outside of the DNA.

Question 15

Adenine and thymine are held together by two hydrogen bonds,while guanine and cytosine are held together by three hydrogen bonds.If you were to slowly heat a piece of DNA rich in GC base pairs-in order to denature it-would you expect the melting temperature to be higher or lower than a piece of DNA rich in AT base pairs?

Accepted Answer

The melting temperature would

Question 16

The nuclear genome of a mouse nerve cell is compared to that of a mouse skin cell.What differences can we expect to see between these two cells' nuclear genomes?

Accepted Answer

A) The two cells have almost identical genomes,but the nerve cell has more nerve-specific genes. 
B) The two cells have almost identical genomes,but the skin cell has more skin-specific genes. 
C) The two cells have different genomes: the nerve cell has nerve-specific genes but not skin-specific genes,and the skin cell has skin-specific genes but no nerve-specific genes. 
D) The two cells have similar genomes,but the nerve cell has more nerve-specific genes and the skin cell has more skin-specific genes. 
E) The two cells have the same genome;there will be no differences. 
A) The two cells have almost identical genomes,but the nerve cell has more nerve-specific genes. 
B) The two cells have almost identical genomes,but the skin cell has more skin-specific genes. 
C) The two cells have different genomes: the nerve cell has nerve-specific genes but not skin-specific genes,and the skin cell has skin-specific genes but no nerve-specific genes. 
D) The two cells have similar genomes,but the nerve cell has more nerve-specific genes and the skin cell has more skin-specific genes. 
E) The two cells have the same genome;there will be no differences.

Question 17

You have come across a dog (named Cindy)that does not have a tail.Interestingly,all the puppies produced by this dog don't have a tail.If the lack of tail is caused by a genetic mutation,where has this mutation most likely taken place?

Accepted Answer

A) in Cindy's gametes 
B) in the cells that should normally have given rise to Cindy's tail 
C) in the cells that should normally have given rise to Cindy's and her puppies' tails 
D) in all of Cindy's cells (including her gametes) 
E) in a gamete of one of Cindy's parents 
A) in Cindy's gametes 
B) in the cells that should normally have given rise to Cindy's tail 
C) in the cells that should normally have given rise to Cindy's and her puppies' tails 
D) in all of Cindy's cells (including her gametes) 
E) in a gamete of one of Cindy's parents

Question 18

Match between columns
                        Premises: autosomal dominant
autosomal recessive
X-linked dominant
X-linked recessive
Y-linked

Accepted Answer

The Answer of 990390e4_c5f6_11ee_8d17_824372e81c00_TB3928_00 and 99046514_c5f6_11ee_8d17_824372e81c00_TB3928_00 and 99055eba_c5f6_11ee_8d17_824372e81c00_TB3928_00 and 990639f2_c5f6_11ee_8d17_824372e81c00_TB3928_00 is...

Question 19

Match between columns
                        Premises: one-gene-one–enzyme hypothesis
gene variants
cut DNA at specific location
unique DNA variants that exist in a child but neither of its parents.
DNA replication

Accepted Answer

The Answer of alleles and de novo mutations and point is...

Question 20

A sample of normal double-stranded DNA was found to have a guanine content of 18%.What is the expected proportion of adenine?

Accepted Answer

A) 9% 
B) 32% 
C) 36% 
D) 68% 
E) 82% 
A) 9% 
B) 32% 
C) 36% 
D) 68% 
E) 82%

Which of the following is/are FALSE about genes?

Wild cats (Felis silvestris)and common mice (Mus musculus)are diploid.In wild cats 2n = 38,while in common mice 2n = 40.Based on this information,we can conclude that wild cat cells have:

Which of the following is a component of DNA?

A gene is transcribed into an mRNA,and this mRNA is 110 nucleotides long.Which of the following proteins could it encode?

Explain what it means to say that the genetic code is redundant.How does this redundancy help protect against mutations?

Which of the following is a correct representation of the central dogma?

Using a concept map,indicate all the relationships that exist among the following: chromosomes,DNA,genes,genomes,proteins,histones,chromatin,nucleus,and mitochondria.

Which of the following features make a species suitable as a model organism?

Using molecular techniques,researchers have knocked out both copies of gene "G" in a series of genetically identical mouse embryos.These mice develop normally,except for their forelimbs,which are missing several small bones.What can be concluded from the results of this experiment?

The early 1900s was an important period for genetics due to which of the following major events?

How many different DNA molecules that are eight-nucleotide pairs long are theoretically possible?

Mutations are often viewed as negative events,and they are nearly always bad for an organism.Paradoxically,without mutations there would be no evolution,and so they are essential.Explain how this is so.

Which of the following is/are TRUE of the DNA structure solved by Watson and Crick?

The nuclear genome of a mouse nerve cell is compared to that of a mouse skin cell.What differences can we expect to see between these two cells' nuclear genomes?

You have come across a dog (named Cindy)that does not have a tail.Interestingly,all the puppies produced by this dog don't have a tail.If the lack of tail is caused by a genetic mutation,where has this mutation most likely taken place?

A sample of normal double-stranded DNA was found to have a guanine content of 18%.What is the expected proportion of adenine?

Single-Gene Inheritance

Independent Assortment of Genes

Mapping Eukaryote Chromosomes by Recombination

The Genetics of Bacteria and Their Viruses

Gene Interaction

Dna: Structure and Replication

Rna: Transcription and Processing

Proteins and Their Synthesis

Gene Isolation and Manipulation

Regulation of Gene Expression in Bacteria and Their Viruses

Regulation of Gene Expression in Eukaryotes

The Genetic Control of Development

Genomes and Genomics

The Dynamic Genome: Transposable Elements

Mutation, Repair, and Recombination

Large-Scale Chromosomal Changes

Population Genetics

The Inheritance of Complex Traits

Evolution of Genes and Traits

Filters

Exam 1: The Genetics Revolution

Which of the following is/are FALSE about genes?

Wild cats (Felis silvestris)and common mice (Mus musculus)are diploid.In wild cats 2n = 38,while in common mice 2n = 40.Based on this information,we can conclude that wild cat cells have:

Which of the following is a component of DNA?

A gene is transcribed into an mRNA,and this mRNA is 110 nucleotides long.Which of the following proteins could it encode?

Explain what it means to say that the genetic code is redundant.How does this redundancy help protect against mutations?

Which of the following is a correct representation of the central dogma?

Using a concept map,indicate all the relationships that exist among the following: chromosomes,DNA,genes,genomes,proteins,histones,chromatin,nucleus,and mitochondria.

Which of the following features make a species suitable as a model organism?

Using molecular techniques,researchers have knocked out both copies of gene "G" in a series of genetically identical mouse embryos.These mice develop normally,except for their forelimbs,which are missing several small bones.What can be concluded from the results of this experiment?

The early 1900s was an important period for genetics due to which of the following major events?

How many different DNA molecules that are eight-nucleotide pairs long are theoretically possible?

Mutations are often viewed as negative events,and they are nearly always bad for an organism.Paradoxically,without mutations there would be no evolution,and so they are essential.Explain how this is so.

Which of the following is/are TRUE of the DNA structure solved by Watson and Crick?

The nuclear genome of a mouse nerve cell is compared to that of a mouse skin cell.What differences can we expect to see between these two cells' nuclear genomes?

You have come across a dog (named Cindy)that does not have a tail.Interestingly,all the puppies produced by this dog don't have a tail.If the lack of tail is caused by a genetic mutation,where has this mutation most likely taken place?

A sample of normal double-stranded DNA was found to have a guanine content of 18%.What is the expected proportion of adenine?

Single-Gene Inheritance

Independent Assortment of Genes

Mapping Eukaryote Chromosomes by Recombination

The Genetics of Bacteria and Their Viruses

Gene Interaction

Dna: Structure and Replication

Rna: Transcription and Processing

Proteins and Their Synthesis

Gene Isolation and Manipulation

Regulation of Gene Expression in Bacteria and Their Viruses

Regulation of Gene Expression in Eukaryotes

The Genetic Control of Development

Genomes and Genomics

The Dynamic Genome: Transposable Elements

Mutation, Repair, and Recombination

Large-Scale Chromosomal Changes

Population Genetics

The Inheritance of Complex Traits

Evolution of Genes and Traits

Filters