Question 1

Many good ideas in science ultimately turn out to be incorrect.The author mentions several such ideas in the history of genetics.In your own words, state one idea in the history of genetics that turned out to be incorrect.

Accepted Answer

Pangenesis-The idea that information nee...

Question 2

Identify a FALSE statement from the 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)  Many of the model organisms used in genetic research are useful because they have short generation times.
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) B) and E)
G) C) and D) D

Question 3

The complete genetic makeup of an organism is referred to as its:

Accepted Answer

A)  chromosome.
B)  alleles.
C)  locus.
D)  genome.
E)  phenotype.F) A) and D)
G) A) and E)

Question 4

The fruit fly Drosophila melanogaster is an important model system for studying inheritance in animals and genetic control of animal development, including humans.Evaluate fruit flies as a model system for human biology.What are their strengths and weaknesses as a model system?

Accepted Answer

Strengths-Fruit flies have proven to be an excellent model system for studying aspects of biology that they share with humans.Fruit flies are simpler in structure and physiology than humans and have a much simpler genome.They are small and easy to raise, they have a short generation time, and they produce a large number of offspring.Their chromosomes have been mapped and their genomes analyzed extensively.It is relatively easy to isolate and study mutants that are defective in specific processes of interest.These characteristics make them ideal for genetic studies of biological processes. Weaknesses-Some aspects of fruit fly genetics and development are not shared with humans.Therefore, some features discovered in fruit flies will not apply directly to humans.Also, humans have many features that fruit flies lack.Fruit flies will not serve well as a model system for studying these features of human biology.

Question 5

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?

Accepted Answer

Researchers might want to study the proc...

Question 6

How do gene mutations differ from chromosome mutations? What characteristic do they both have in common?

Accepted Answer

Gene mutations affect only the genetic i...

Question 7

Why might bacteria be good model organisms for studying the basics of inheritance? Describe two advantages over studying genetics in mice, dogs, or humans.

Accepted Answer

they have fewer genes, fewer chromosomes...

Question 8

The three-dimensional structure of DNA was first deciphered based on the work of:

Accepted Answer

A)  James Watson.
B)  Francis Crick.
C)  Maurice Wilkins.
D)  Rosalind Franklin.
E)  All of the above answers are correct.F) A) and E)
G) A) and C)

Question 9

What is the complete set of genetic instructions for an organism called?

Accepted Answer

A)  Chromosome
B)  Genome
C)  Phenotype
D)  RNA complement
E)  Acquired characteristicsF) All of the above
G) A) and D)

Question 10

Describe one way in which discoveries in genetics will likely impact your life in the future.

Accepted Answer

Again, answers will vary, but one exampl...

Question 11

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

Accepted Answer

A)  evolution.
B)  defects.
C)  phenotypes.
D)  alleles.
E)  mutations.F) D) and E)
G) None of the above

Question 12

Recently, geneticists have associated particular single nucleotide polymorphisms (SNPs)in humans with an increased risk for a heart attack.How do you think this study and similar studies, which have found other SNPs associated with other diseases, will impact medical practice in the future? What is a current limitation in using this type of information clinically?

Accepted Answer

The main goal is to be able to identify ...

Question 13

Describe a discovery in genetics or an area of current research that you are concerned about that might have a negative impact on your life in the future.Explain why you think it might have a negative impact on you personally.

Accepted Answer

Gene mutations affect only the genetic i...

Question 14

Which of the following examples of scientist and their contribution is matched INCORRECTLY?

Accepted Answer

A)  Watson and Crick-Chemical structure of DNA
B)  Mendel-Principles of heredity using pea plants
C)  Flemming-An accurate description of mitosis
D)  Morgan-Polymerase chain reaction
E)  Sutton-Genes on chromosomes as units of inheritanceF) C) and D)
G) D) and E) D

Question 15

Which of the following is NOT a part of a single nucleotide?

Accepted Answer

A)  Nitrogenous base
B)  Sugar
C)  Hydrogen bond
D)  Phosphate
E)  Nitrogenous base and sugar are both correct.F) B) and C)
G) A) and B)

Question 16

Many good ideas in science ultimately turn out to be incorrect.Two of these are the inheritance of acquired characteristics and blending inheritance.Summarize the evidence that ultimately caused the idea to be rejected by modern geneticists.

Accepted Answer

1900: Mendel's previously published work...

Question 17

What is a technique for rapidly amplifying a small piece of DNA?

Accepted Answer

A)  that organisms vary over time.
B)  the correct understanding of inheritance.
C)  that heredity was fundamental to evolution.
D)  that plants and animals both evolve.
E)  that evolution involves selection.F) A) and B)
G) C) and E)

Question 18

Why was it particularly surprising when albinism was found to be in a very high frequency among the Hopi Native Americans?

Accepted Answer

A)  This condition is not found at all among other human populations.
B)  The Hopi considered albinos to be "bad luck" and exiled them to other Native American groups to live.
C)  The desert environment of the Hopi would normally not be considered favorable to the health of albinos.
D)  Albinism is a genetic condition found only among individuals in societies with modern medical practices available since it is lethal before birth without medical intervention and would not appear among living individuals in societies without good medical care.
E)  The Hopi, like many Native American populations, do not normally suffer from genetic disorders.F) B) and C)
G) A) and E)

Question 19

Which of the following model organisms is a prokaryote?

Accepted Answer

A)  Drosophila melanogaster
B)  Mus musculus
C)  Saccharomycetes cerevisiae
D)  Escherichia coli
E)  Arabidopsis thalianaF) A) and B)
G) All of the above

Question 20

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

Accepted Answer

Techniques for the observation of cells ...

Exam 1: Introduction to Genetics

Many good ideas in science ultimately turn out to be incorrect.The author mentions several such ideas in the history of genetics.In your own words, state one idea in the history of genetics that turned out to be incorrect.

Correct Answer
verified
Pangenesis-The idea that information nee...
View Answer

Identify a FALSE statement from the descriptions of genetics.

Correct Answer
verified
D

The complete genetic makeup of an organism is referred to as its:

Correct Answer
verified

The fruit fly Drosophila melanogaster is an important model system for studying inheritance in animals and genetic control of animal development, including humans.Evaluate fruit flies as a model system for human biology.What are their strengths and weaknesses as a model system?

Correct Answer
verified
Researchers might want to study the proc...
View Answer

How do gene mutations differ from chromosome mutations? What characteristic do they both have in common?

Correct Answer
verified
Gene mutations affect only the genetic i...
View Answer

Why might bacteria be good model organisms for studying the basics of inheritance? Describe two advantages over studying genetics in mice, dogs, or humans.

Correct Answer
verified
they have fewer genes, fewer chromosomes...
View Answer

The three-dimensional structure of DNA was first deciphered based on the work of:

Correct Answer
verified

What is the complete set of genetic instructions for an organism called?

Correct Answer
verified

Describe one way in which discoveries in genetics will likely impact your life in the future.

Correct Answer
verified
Again, answers will vary, but one exampl...
View Answer

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

Correct Answer
verified

Correct Answer
verified
The main goal is to be able to identify ...
View Answer

Describe a discovery in genetics or an area of current research that you are concerned about that might have a negative impact on your life in the future.Explain why you think it might have a negative impact on you personally.

Correct Answer
verified
Gene mutations affect only the genetic i...
View Answer

Which of the following examples of scientist and their contribution is matched INCORRECTLY?

Correct Answer
verified
D

Which of the following is NOT a part of a single nucleotide?

Correct Answer
verified

Many good ideas in science ultimately turn out to be incorrect.Two of these are the inheritance of acquired characteristics and blending inheritance.Summarize the evidence that ultimately caused the idea to be rejected by modern geneticists.

Correct Answer
verified
1900: Mendel's previously published work...
View Answer

What is a technique for rapidly amplifying a small piece of DNA?

Correct Answer
verified

Why was it particularly surprising when albinism was found to be in a very high frequency among the Hopi Native Americans?

Correct Answer
verified

Which of the following model organisms is a prokaryote?

Correct Answer
verified

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

Correct Answer
verified
Techniques for the observation of cells ...
View Answer

Exam 1: Introduction to Genetics

Many good ideas in science ultimately turn out to be incorrect.The author mentions several such ideas in the history of genetics.In your own words, state one idea in the history of genetics that turned out to be incorrect.

Correct AnswerverifiedPangenesis-The idea that information nee...View AnswerShow Answer

Identify a FALSE statement from the descriptions of genetics.

Correct AnswerverifiedD

The complete genetic makeup of an organism is referred to as its:

Correct AnswerverifiedShow Answer

The fruit fly Drosophila melanogaster is an important model system for studying inheritance in animals and genetic control of animal development, including humans.Evaluate fruit flies as a model system for human biology.What are their strengths and weaknesses as a model system?

Correct AnswerverifiedResearchers might want to study the proc...View AnswerShow Answer

How do gene mutations differ from chromosome mutations? What characteristic do they both have in common?

Correct AnswerverifiedGene mutations affect only the genetic i...View AnswerShow Answer

Why might bacteria be good model organisms for studying the basics of inheritance? Describe two advantages over studying genetics in mice, dogs, or humans.

Correct Answerverifiedthey have fewer genes, fewer chromosomes...View AnswerShow Answer

The three-dimensional structure of DNA was first deciphered based on the work of:

Correct AnswerverifiedShow Answer

What is the complete set of genetic instructions for an organism called?

Correct AnswerverifiedShow Answer

Describe one way in which discoveries in genetics will likely impact your life in the future.

Correct AnswerverifiedAgain, answers will vary, but one exampl...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedThe main goal is to be able to identify ...View AnswerShow Answer

Describe a discovery in genetics or an area of current research that you are concerned about that might have a negative impact on your life in the future.Explain why you think it might have a negative impact on you personally.

Correct AnswerverifiedGene mutations affect only the genetic i...View AnswerShow Answer

Which of the following examples of scientist and their contribution is matched INCORRECTLY?

Correct AnswerverifiedD

Which of the following is NOT a part of a single nucleotide?

Correct AnswerverifiedShow Answer

Many good ideas in science ultimately turn out to be incorrect.Two of these are the inheritance of acquired characteristics and blending inheritance.Summarize the evidence that ultimately caused the idea to be rejected by modern geneticists.

Correct Answerverified1900: Mendel's previously published work...View AnswerShow Answer

What is a technique for rapidly amplifying a small piece of DNA?

Correct AnswerverifiedShow Answer

Why was it particularly surprising when albinism was found to be in a very high frequency among the Hopi Native Americans?

Correct AnswerverifiedShow Answer

Which of the following model organisms is a prokaryote?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedTechniques for the observation of cells ...View AnswerShow Answer

Correct Answer
verified
Pangenesis-The idea that information nee...
View Answer

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified
Researchers might want to study the proc...
View Answer

Correct Answer
verified
Gene mutations affect only the genetic i...
View Answer

Correct Answer
verified
they have fewer genes, fewer chromosomes...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Again, answers will vary, but one exampl...
View Answer

Correct Answer
verified

Correct Answer
verified
The main goal is to be able to identify ...
View Answer

Correct Answer
verified
Gene mutations affect only the genetic i...
View Answer

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified
1900: Mendel's previously published work...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Techniques for the observation of cells ...
View Answer