Question 1

In the late 1990s what important discovery in genetics was made?

Accepted Answer

A)   The three-dimensional structure of DNA was described, which showed how DNA might be replicated.
B)   The first recombinant DNA experiments were performed that started the biotechnology field.
C)   DNA sequencing methods were first discovered.
D)   Genes were found to be located on chromosomes.
E)   Tiny RNAs were discovered that play important roles in the regulation of gene expression.F) B) and D)
G) All of the above

Question 2

List and describe two significant events in the history of genetics that occurred during the twentieth century.

Accepted Answer

1. Discovery of the structure of DNA: In...

Question 3

Which of the following statements is FALSE concerning prokaryotic cells?

Accepted Answer

A)   They lack a nuclear membrane.
B)   They lack organelles such as chloroplasts.
C)   They are less complex than eukaryotic cells.
D)   They lack genetic information.
E)   They lack a true nucleus.F) A) and E)
G) A) and B)

Question 4

Many good ideas in science ultimately turn out to be incorrect and this has happened several times in the history of genetics. Why do you think a particular idea was widely accepted by scholars of that time? Include in your answer some evidence in favor of the idea, observations that seemed to support the idea, or other rationale for accepting the idea.

Accepted Answer

One example of a widely accepted but ult...

Question 5

Albinism is rare in most human populations, occurring at a frequency of about 1 in 20,000 people. However, the trait occurs at a frequency of 1 in 200 in certain Hopi villages of Black Mesa in Arizona. Explain in terms of natural selection why albinism is so rare in most human populations.

Accepted Answer

Albinism is a genetic condition characte...

Question 6

Permanent, heritable changes in genetic information (DNA)  are called:

Accepted Answer

A)   evolution.
B)   defects.
C)   SNP.
D)   alleles.
E)   mutations.F) A) and C)
G) B) and D)

Question 7

Within cells, genes are located on structures called:

Accepted Answer

A)   genomes.
B)   chromosomes.
C)   phenotypes.
D)   genotypes.
E)   alleles.F) A) and E)
G) B) and E)

Question 8

Which of the following species is considered a model genetic organism?

Accepted Answer

A)   the plant Linaria vulgaris
B)   the deer mouse Peromyscus maniculatus
C)   the worm Caenorhabditis elegans
D)   the frog Hyla chrysoscelis
E)   the chimpanzee Pan troglodytesF) A) and B)
G) A) and C)

Question 9

In humans, single nucleotide differences among individuals, called single nucleotide polymorphisms (SNPs) , have been used to show:

Accepted Answer

A)   how a mutation in a gene can lead to a particular trait.
B)   how gene therapy can be used to treat various disorders.
C)   the correlation of a set of genetic differences with a particular medical condition.
D)   that the concept of the inheritance of acquired characteristics is not correct.
E)   that genetic information can be transferred from DNA to RNA.F) A) and B)
G) A) and C)

Question 10

The contribution of Gilbert and Sanger to modern genetics was to:

Accepted Answer

A)   develop the PCR technique.
B)   discover DNA in the nucleus of cells.
C)   describe the structure of DNA.
D)   show that genes were made of DNA.
E)   develop a method for sequencing DNA.F) A) and E)
G) A) and D)

Question 11

Identify a FALSE statement from the following descriptions of genetics.

Accepted Answer

A)   Humans first applied genetics to the domestication of plants and animals between approximately 10,000 and 12,000 years ago.
B)   Some viruses use RNA to carry their genetic information.
C)   Albinism results from a mutation in the genes that control the synthesis and storage of melanin.
D)   All human traits that display blending inheritance are affected by a single gene.
E)   The process by which genetic information is copied and decoded is similar for all forms of life.F) A) and B)
G) A) and C)

Question 12

_____ is a change in allele frequency of a population over time.

Accepted Answer

A)   Blending inheritance
B)   Preformation
C)   Genome
D)   Evolution
E)   PhenotypeF) A) and B)
G) B) and C)

Question 13

Which of the following combines molecular biology and computer science?

Accepted Answer

A)   single-nucleotide polymorphism
B)   microRNAs
C)   polymerase chain reaction
D)   bioinformatics
E)   eukaryoticsF) A) and B)
G) A) and C)

Question 14

Identify a TRUE statement from the following descriptions concerning genetics.

Accepted Answer

A)   The theory of pangenesis states that all living organisms are composed of cells.
B)   Bacteria and viruses are not useful in studying genes and inheritance because they are structurally and metabolically different from eukaryotic cells.
C)   Charles Darwin accurately described the laws of inheritance in his landmark book, On the Origin of Species.
D)   Many human traits, such as skin and hair color, are determined by more than a single gene.
E)   Evolution can occur without genetic changes in the population.F) A) and E)
G) A) and B)

Question 15

Which one of the following pairings between the subdiscipline of genetics and the phenomenon is INCORRECT?

Accepted Answer

A)   evolution-population genetics
B)   gene regulation-molecular genetics
C)   allelic frequency alteration-population genetics
D)   arrangement of genes on chromosome-transmission genetics
E)   chemical nature of the gene-transmission geneticsF) All of the above
G) A) and D)

Question 16

The three-dimensional structure of DNA was first deciphered based on the work of which of the following individuals? (Select all that apply.)

Accepted Answer

A)   James Watson
B)   Francis Crick
C)   Maurice Wilkins
D)   Thomas Hunt Morgan
E)   Rosalind FranklinF) A) and C)
G) A) and E)

Question 17

A measurable or observable trait or characteristic is called a:

Accepted Answer

A)   phenotype.
B)   genotype.
C)   single-nucleotide polymorphism.
D)   small interfering RNA.
E)   gene bank.F) A) and E)
G) C) and D)

Question 18

Which of the following pairs is a part of a single nucleotide?

Accepted Answer

A)   nitrogenous base and sugar
B)   sugar and amino acid
C)   guanine and cytosinetwo nitrogenous bases
D)   amino acid and nitrogenous baseE) A) and D)
F) All of the above

Question 19

The fruit fly Drosophila melanogaster is an important model system for studying inheritance in animals and genetic control of animal development, including humans. If researchers ultimately want to understand a biological process in humans, why might they want to study the process in fruit flies first? (Select all that apply.)

Accepted Answer

A)   Fruit flies are relatively easy to genetically manipulate and to isolate mutations.
B)   Fruit flies have short generation times and produce relatively large numbers of progeny.
C)   Fruit flies have simpler genomes than do humans.
D)   Fruit flies share all important physiological and developmental processes with humans.
E)   Fruit flies are small and easy to raise.F) None of the above
G) B) and D)

Question 20

The contribution Charles Darwin made to biology was to:

Accepted Answer

A)   demonstrate the connection between Mendel's principles of inheritance and evolution.
B)   propose that evolution occurs by natural selection.
C)   develop the theory of evolution, based on earlier theories of population genetics.
D)   connect the fields of evolution and molecular genetics.
E)   determine the first DNA sequence for a free-living organism.F) A) and B)
G) D) and E)

Exam 1: Introduction to Genetics

List and describe two significant events in the history of genetics that occurred during the twentieth century.

Correct Answer
Answered by ExamLex AI
1. Discovery of the structure of DNA: In...
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Identify a TRUE statement from the following descriptions concerning genetics.

Correct Answer
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Correct Answer
Answered by ExamLex AI
One example of a widely accepted but ult...
View Answer

Which of the following species is considered a model genetic organism?

Correct Answer
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A measurable or observable trait or characteristic is called a:

Correct Answer
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The three-dimensional structure of DNA was first deciphered based on the work of which of the following individuals? (Select all that apply.)

Correct Answer
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Permanent, heritable changes in genetic information (DNA) are called:

Correct Answer
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Identify a FALSE statement from the following descriptions of genetics.

Correct Answer
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Which one of the following pairings between the subdiscipline of genetics and the phenomenon is INCORRECT?

Correct Answer
verified

Albinism is rare in most human populations, occurring at a frequency of about 1 in 20,000 people. However, the trait occurs at a frequency of 1 in 200 in certain Hopi villages of Black Mesa in Arizona. Explain in terms of natural selection why albinism is so rare in most human populations.

Correct Answer
Answered by ExamLex AI
Albinism is a genetic condition characte...
View Answer

Within cells, genes are located on structures called:

Correct Answer
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The contribution of Gilbert and Sanger to modern genetics was to:

Correct Answer
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_____ is a change in allele frequency of a population over time.

Correct Answer
verified

Which of the following combines molecular biology and computer science?

Correct Answer
verified

The contribution Charles Darwin made to biology was to:

Correct Answer
verified

Which of the following statements is FALSE concerning prokaryotic cells?

Correct Answer
verified

In the late 1990s what important discovery in genetics was made?

Correct Answer
verified

Correct Answer
verified

Which of the following pairs is a part of a single nucleotide?

Correct Answer
verified

In humans, single nucleotide differences among individuals, called single nucleotide polymorphisms (SNPs) , have been used to show:

Correct Answer
verified

Exam 1: Introduction to Genetics

List and describe two significant events in the history of genetics that occurred during the twentieth century.

Correct AnswerAnswered by ExamLex AI1. Discovery of the structure of DNA: In...View AnswerShow Answer

Identify a TRUE statement from the following descriptions concerning genetics.

Correct AnswerverifiedShow Answer

Correct AnswerAnswered by ExamLex AIOne example of a widely accepted but ult...View AnswerShow Answer

Which of the following species is considered a model genetic organism?

Correct AnswerverifiedShow Answer

A measurable or observable trait or characteristic is called a:

Correct AnswerverifiedShow Answer

The three-dimensional structure of DNA was first deciphered based on the work of which of the following individuals? (Select all that apply.)

Correct AnswerverifiedShow Answer

Permanent, heritable changes in genetic information (DNA) are called:

Correct AnswerverifiedShow Answer

Identify a FALSE statement from the following descriptions of genetics.

Correct AnswerverifiedShow Answer

Which one of the following pairings between the subdiscipline of genetics and the phenomenon is INCORRECT?

Correct AnswerverifiedShow Answer

Albinism is rare in most human populations, occurring at a frequency of about 1 in 20,000 people. However, the trait occurs at a frequency of 1 in 200 in certain Hopi villages of Black Mesa in Arizona. Explain in terms of natural selection why albinism is so rare in most human populations.

Correct AnswerAnswered by ExamLex AIAlbinism is a genetic condition characte...View AnswerShow Answer

Within cells, genes are located on structures called:

Correct AnswerverifiedShow Answer

The contribution of Gilbert and Sanger to modern genetics was to:

Correct AnswerverifiedShow Answer

_____ is a change in allele frequency of a population over time.

Correct AnswerverifiedShow Answer

Which of the following combines molecular biology and computer science?

Correct AnswerverifiedShow Answer

The contribution Charles Darwin made to biology was to:

Correct AnswerverifiedShow Answer

Which of the following statements is FALSE concerning prokaryotic cells?

Correct AnswerverifiedShow Answer

In the late 1990s what important discovery in genetics was made?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following pairs is a part of a single nucleotide?

Correct AnswerverifiedShow Answer

In humans, single nucleotide differences among individuals, called single nucleotide polymorphisms (SNPs) , have been used to show:

Correct AnswerverifiedShow Answer

Correct Answer
Answered by ExamLex AI
1. Discovery of the structure of DNA: In...
View Answer

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
One example of a widely accepted but ult...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Albinism is a genetic condition characte...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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