Question 1

The locus is the physical place of a gene on a chromosome.

Accepted Answer

A) True 
 B)False

Question 2

The percentage of recombination associated with independent assortment should approximate 50%.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following are highly desirable characteristics of an organism that make it relatively easy to construct a genetic linkage map?

Accepted Answer

A)   Short generation times
B)   Produces large numbers of offspring
C)   Easily crossed
D)   All of the answers are correctE) B) and C)
F) B) and D)

Question 4

The first observational evidence that genes may be inherited together rather than by simple Mendelian inheritance was provided by __________.

Accepted Answer

A)  Mendel
B)  Morgan and Bridges
C)  Bateson and Punnett
D)  Boveri and Sutton
E)  None of the answers are correctF) B) and D)
G) A) and E)

Question 5

In certain algae and in most ascomycete fungi, the nuclei in the cells present in the majority of their life cycle are in the _____ condition.

Accepted Answer

A)  Diploid
B)  Haploid
C)  Triploid
D)  TetraploidE) All of the above
F) B) and C)

Question 6

In a given mapping experiment, you expect that incidence of double crossovers is 3.5%, but you only observe 2.5%. This can be explained by ________________.

Accepted Answer

A)   Interference
B)   Linkage
C)   Coincidence
D)   SegregationE) B) and C)
F) A) and B)

Question 7

In a mapping experiment with three linked genes, which phenotype should occur most often in the F2 offspring?

Accepted Answer

A)  Parental phenotypes
B)  Phenotypes of individuals with single crossover events
C)  Phenotypes of individuals with double crossover events
D)  All of the phenotypes should occur equally in the F2 generationE) All of the above
F) C) and D)

Question 8

A testcross is always performed between the individual that is heterozygous for the genes to be mapped and an individual who is ____________.

Accepted Answer

A)  Heterozygous for the genes
B)  Homozygous dominant for the genes
C)  Homozygous recessive for the genes
D)  Lacking the genes
E)  None of the answers are correctF) C) and E)
G) None of the above

Question 9

Creighton and McClintock worked with _______ and their model system to show that homologous chromosomes physically exchange genetic information during crossing over.

Accepted Answer

A)   fruit flies
B)   peas
C)   corn
D)   tobaccoE) None of the above
F) B) and C)

Question 10

Another name for a chromosome is a _______, since it contains genes that are often inherited together.

Accepted Answer

A)   linkage group
B)   crossing over group
C)   genetic recombinant
D)   bivalentE) B) and C)
F) A) and B)

Exam 6: Genetic Linkage and Mapping in Eukaryotes

The first observational evidence that genes may be inherited together rather than by simple Mendelian inheritance was provided by __________.

Correct Answer
verified

Another name for a chromosome is a _______, since it contains genes that are often inherited together.

Correct Answer
verified

In certain algae and in most ascomycete fungi, the nuclei in the cells present in the majority of their life cycle are in the _____ condition.

Correct Answer
verified

In a mapping experiment with three linked genes, which phenotype should occur most often in the F₂ offspring?

Correct Answer
verified

Creighton and McClintock worked with _______ and their model system to show that homologous chromosomes physically exchange genetic information during crossing over.

Correct Answer
verified

A testcross is always performed between the individual that is heterozygous for the genes to be mapped and an individual who is ____________.

Correct Answer
verified

The percentage of recombination associated with independent assortment should approximate 50%.

Correct Answer
verified

The locus is the physical place of a gene on a chromosome.

Correct Answer
verified

Which of the following are highly desirable characteristics of an organism that make it relatively easy to construct a genetic linkage map?

Correct Answer
verified

In a given mapping experiment, you expect that incidence of double crossovers is 3.5%, but you only observe 2.5%. This can be explained by ________________.

Correct Answer
verified

Exam 6: Genetic Linkage and Mapping in Eukaryotes

The first observational evidence that genes may be inherited together rather than by simple Mendelian inheritance was provided by __________.

Correct AnswerverifiedShow Answer

Another name for a chromosome is a _______, since it contains genes that are often inherited together.

Correct AnswerverifiedShow Answer

In certain algae and in most ascomycete fungi, the nuclei in the cells present in the majority of their life cycle are in the _____ condition.

Correct AnswerverifiedShow Answer

In a mapping experiment with three linked genes, which phenotype should occur most often in the F2 offspring?

Correct AnswerverifiedShow Answer

Creighton and McClintock worked with _______ and their model system to show that homologous chromosomes physically exchange genetic information during crossing over.

Correct AnswerverifiedShow Answer

A testcross is always performed between the individual that is heterozygous for the genes to be mapped and an individual who is ____________.

Correct AnswerverifiedShow Answer

The percentage of recombination associated with independent assortment should approximate 50%.

Correct AnswerverifiedShow Answer

The locus is the physical place of a gene on a chromosome.

Correct AnswerverifiedShow Answer

Which of the following are highly desirable characteristics of an organism that make it relatively easy to construct a genetic linkage map?

Correct AnswerverifiedShow Answer

In a given mapping experiment, you expect that incidence of double crossovers is 3.5%, but you only observe 2.5%. This can be explained by ________________.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

In a mapping experiment with three linked genes, which phenotype should occur most often in the F₂ offspring?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified