Question 1

Many good ideas in science ultimately turn out to be incorrect, and this has happened several times 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

One idea in the history of genetics that...

Question 2

The experiments of Gregor Mendel can be placed into which subdivision of genetics?

Accepted Answer

A)   molecular genetics
B)   population genetics
C)   transmission genetics
D)   molecular genetics and transmission genetics
E)   population genetics and transmission geneticsF) A) and E)
G) A) and B)

Question 3

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. In light of this example and others that you might be aware of, what can you conclude about particular alleles such as the allele for albinism?

Accepted Answer

A)   An allele that leads to an abnormal phenotype will be rare in most populations but common in Native American populations.
B)   An allele that leads to abnormal phenotype will not be beneficial in any population.
C)   An allele that leads to an abnormal phenotype may be beneficial in some environments but harmful in others.
D)   An allele that leads to an abnormal phenotype will rise in frequency after many generations.
E)   An allele that leads to an abnormal phenotype will soon disappear from a population.F) A) and D)
G) A) and C)

Question 4

Which of the following would serve the LEAST well as a model for understanding basic mechanisms of inheritance?

Accepted Answer

A)   fruit flies
B)   humans
C)   yeast
D)   mice
E)   zebrafishF) A) and E)
G) None of the above

Question 5

Which of the following statements is the CORRECT definition of meiosis?

Accepted Answer

A)   It is the method by which prokaryotic cells divide and produce daughter cells.
B)   It is the process by which the genetic information in DNA is transferred to RNA.
C)   It is the separation of chromosomes in the division of sex cells to produce gametes.
D)   It is the separation of chromosomes in the division of somatic cells in plants and animals.
E)   It is the process that produces multiple alleles of genes.F) A) and B)
G) D) and E)

Question 6

The first complete DNA sequence of a nonviral, free-living organism was obtained for:

Accepted Answer

A)   a bacterium in 1900.
B)   a bacterium in 1945.
C)   a bacterium in 1995.
D)   humans in 1990.
E)   humans in 2000.F) A) and B)
G) B) and C)

Question 7

The complete genetic makeup of any organism is referred to as a:

Accepted Answer

A)   phylogeny.
B)   pheynotype.
C)   genome.
D)   genotype.
E)   single-nucleotide polymorphism.F) A) and C)
G) B) and E)

Question 8

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

Fruit flies, specifically <i>Drosophila ...

Question 9

Which of the following statements is TRUE?

Accepted Answer

A)   Each subdiscipline of genetics is very specific as to what is explored and does not overlap with the other subdisciplines.
B)   All phenotypes or traits are always determined by multiple genes.
C)   Albinism arises from the overexpression of the gene that controls the synthesis and storage of melanin.
D)   Humans make excellent model organisms because they have a variety of well-defined traits.
E)   None of the statements provided are true.F) C) and D)
G) B) and E)

Question 10

Among the model genetic organisms, Escherichia coli, a single-celled bacterium, is a prokaryote; saccharomyces cerevisiae, one-celled yeast, is a eukaryote, as are Caenorhabditis elegans, a multicellular nematode worm, and Arabidopisis thaliana, a multicellular plant. Which of these organisms would NOT contain membrane-bound organelles?

Accepted Answer

A)   Escherichia coli
B)   Saccharomyces cerevisiae
C)   Escherichia coli and Saccharomyces cerevisiae
D)   Caenorhabditis elegans
E)   Caenorhabditis elegans and Arabidopisis thalianaF) All of the above
G) A) and C)

Question 11

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 the trait is so much more common among the Hopis of Black Mesa.

Accepted Answer

The higher frequency of albinism among t...

Question 12

Choose the correct match between the scientists and the field of genetics to which they contributed.

Accepted Answer

A)   Haldane and Wright-transmission genetics
B)   Mendel-molecular genetics
C)   Gilbert and Sanger-population genetics
D)   Darwin-molecular genetics
E)   Morgan-transmission geneticsF) A) and E)
G) C) and D)

Question 13

Which of the following scientists contributed significantly to the foundations of transmission genetics?

Accepted Answer

A)   James Watson
B)   Thomas Hunt Morgan
C)   John B. S. Haldane
D)   Charles Darwin
E)   Sewall WrightF) A) and B)
G) A) and C)

Question 14

Which of the following traits would make a species useful as a model genetic organism? (Select all that apply.)

Accepted Answer

A)   large number of progeny
B)   long generation time
C)   small size
D)   ability to be studied in a laboratory
E)   ability to be propagated inexpensivelyF) A) and E)
G) C) and D)

Question 15

Which features distinguish a prokaryotic cell from a eukaryotic cell?

Accepted Answer

Prokaryotic cells and eukaryotic cells a...

Question 16

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) None of the above
G) B) and E)

Question 17

Describe one way in which discoveries in genetics currently impact your daily life apart from this course.

Accepted Answer

One way in which discoveries in genetics...

Question 18

Which of the following scientists contributed significantly to the foundations of molecular genetics?

Accepted Answer

A)   James Watson
B)   Thomas Hunt Morgan
C)   John B. S. Haldane
D)   Charles Darwin
E)   Sewall WrightF) B) and C)
G) None of the above

Question 19

Genetic information can be carried in which of the following biomolecules?

Accepted Answer

A)   proteins
B)   DNA but not RNA
C)   RNA but not DNA
D)   either DNA or RNA
E)   proteins but not RNAF) C) and E)
G) B) and E)

Question 20

How do DNA and RNA differ?

Accepted Answer

A)   DNA contains the nitrogenous base thymine while RNA contains the base uracil instead of thymine.
B)   DNA contains the nitrogenous base guanine while RNA contains the base cytosine instead of guanine.
C)   DNA is composed of repeating units called nucleotides while RNA is composed of repeating units called amino acids.
D)   DNA is composed of repeating units called amino acids while RNA is composed of repeating units called nucleotides.
E)   In DNA the nucleotides contain a sugar, a base, and a phosphate while in RNA the nucleotides contain no sugar.F) A) and E)
G) C) and D)

Exam 1: Introduction to Genetics

The complete genetic makeup of any organism is referred to as a:

Correct Answer
verified

Which of the following traits would make a species useful as a model genetic organism? (Select all that apply.)

Correct Answer
verified

Which of the following would serve the LEAST well as a model for understanding basic mechanisms of inheritance?

Correct Answer
verified

Which of the following scientists contributed significantly to the foundations of molecular genetics?

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The higher frequency of albinism among t...
View Answer

Which of the following statements is TRUE?

Correct Answer
verified

The experiments of Gregor Mendel can be placed into which subdivision of genetics?

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
Answered by ExamLex AI
Fruit flies, specifically Drosophila ...
View Answer

Which features distinguish a prokaryotic cell from a eukaryotic cell?

Correct Answer
Answered by ExamLex AI
Prokaryotic cells and eukaryotic cells a...
View Answer

Describe one way in which discoveries in genetics currently impact your daily life apart from this course.

Correct Answer
Answered by ExamLex AI
One way in which discoveries in genetics...
View Answer

Which of the following scientists contributed significantly to the foundations of transmission genetics?

Correct Answer
verified

Correct Answer
verified

How do DNA and RNA differ?

Correct Answer
verified

Genetic information can be carried in which of the following biomolecules?

Correct Answer
verified

Many good ideas in science ultimately turn out to be incorrect, and this has happened several times 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
Answered by ExamLex AI
One idea in the history of genetics that...
View Answer

Choose the correct match between the scientists and the field of genetics to which they contributed.

Correct Answer
verified

The first complete DNA sequence of a nonviral, free-living organism was obtained for:

Correct Answer
verified

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

Correct Answer
verified

Which of the following statements is the CORRECT definition of meiosis?

Correct Answer
verified

Exam 1: Introduction to Genetics

The complete genetic makeup of any organism is referred to as a:

Correct AnswerverifiedShow Answer

Which of the following traits would make a species useful as a model genetic organism? (Select all that apply.)

Correct AnswerverifiedShow Answer

Which of the following would serve the LEAST well as a model for understanding basic mechanisms of inheritance?

Correct AnswerverifiedShow Answer

Which of the following scientists contributed significantly to the foundations of molecular genetics?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerAnswered by ExamLex AIThe higher frequency of albinism among t...View AnswerShow Answer

Which of the following statements is TRUE?

Correct AnswerverifiedShow Answer

The experiments of Gregor Mendel can be placed into which subdivision of genetics?

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 AnswerAnswered by ExamLex AIFruit flies, specifically Drosophila ...View AnswerShow Answer

Which features distinguish a prokaryotic cell from a eukaryotic cell?

Correct AnswerAnswered by ExamLex AIProkaryotic cells and eukaryotic cells a...View AnswerShow Answer

Describe one way in which discoveries in genetics currently impact your daily life apart from this course.

Correct AnswerAnswered by ExamLex AIOne way in which discoveries in genetics...View AnswerShow Answer

Which of the following scientists contributed significantly to the foundations of transmission genetics?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

How do DNA and RNA differ?

Correct AnswerverifiedShow Answer

Genetic information can be carried in which of the following biomolecules?

Correct AnswerverifiedShow Answer

Many good ideas in science ultimately turn out to be incorrect, and this has happened several times in the history of genetics. In your own words, state one idea in the history of genetics that turned out to be incorrect.

Correct AnswerAnswered by ExamLex AIOne idea in the history of genetics that...View AnswerShow Answer

Choose the correct match between the scientists and the field of genetics to which they contributed.

Correct AnswerverifiedShow Answer

The first complete DNA sequence of a nonviral, free-living organism was obtained for:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following statements is the CORRECT definition of meiosis?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The higher frequency of albinism among t...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Fruit flies, specifically Drosophila ...
View Answer

Correct Answer
Answered by ExamLex AI
Prokaryotic cells and eukaryotic cells a...
View Answer

Correct Answer
Answered by ExamLex AI
One way in which discoveries in genetics...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
One idea in the history of genetics that...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified