Question 1

In an ordered octad, every spore is adjacent to at least one spore that is genetically identical to itself.

Accepted Answer

A) True 
 B)False

Question 2

The locus B on the X chromosome of a malaria-carrying mosquito shows a 49% recombination rate with respect to the locus M.Since a recombination rate of 50% is essentially indistinguishable from independent assortment, you might be tempted to look for a locus that falls between B and M.Before you decide to do all that work, you run a chi-square test to determine the p value of your experiment.Which of the following p values would be most likely to tell you that you should accept the conclusion that locus B and locus M are, indeed, 49 mu apart and that another locus is not necessary?

Accepted Answer

A) p = 0.45 
B) p = 0.07 
C) p = 0.05 
D) p = 0.0007 
A) p = 0.45 
B) p = 0.07 
C) p = 0.05 
D) p = 0.0007

Question 3

A woman whose mother is colorblind and whose father has hemophilia A is pregnant with a boy and what is the probability that the baby will have normal vision and blood clotting?

Accepted Answer

A) 0.03 
B) 0.15 
C) 0.485 
D) 0.47 
E) 0.015 
A) 0.03 
B) 0.15 
C) 0.485 
D) 0.47 
E) 0.015

Question 4

Tetrad analysis shows that crossing over occurs at the four-strand stage (i.e., after replication) because, when two genes are linked,

Accepted Answer

A) NPD > T. 
B) T > NPD. 
C) T > PD. 
D) PD > NPD. 
E) PD > T. 
A) NPD > T. 
B) T > NPD. 
C) T > PD. 
D) PD > NPD. 
E) PD > T.

Question 5

What is the p value from this test? (Pick the most accurate choice.)

Accepted Answer

A) p > 0.5 B) 0.1 < p < 0.5 C) p < 0.1 D) p < 0.05 E) p < 0.01 A) p > 0.5 B) 0.1 < p < 0.5 C) p < 0.1 D) p < 0.05 E) p < 0.01

Question 6

Twin spotting provides evidence of what genetic event?

Accepted Answer

A) Meiotic recombination 
B) Mitotic recombination 
C) Linkage 
D) Mutation 
E) Biological evolution 
A) Meiotic recombination 
B) Mitotic recombination 
C) Linkage 
D) Mutation 
E) Biological evolution

Question 7

Two genes are considered linked when F2 progeny more commonly show the recombinant genotype.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following linkage maps correctly shows the order and distance between the y, f, and v genes?

Accepted Answer

A) f--35 mu--y--15 mu--v 
B) f--22 mu--y--15 mu--v 
C) y--35 mu--f--22 mu--v 
D) y--22 mu--v--15 mu--f 
E) y--15 mu--v--22 mu--f 
A) f--35 mu--y--15 mu--v 
B) f--22 mu--y--15 mu--v 
C) y--35 mu--f--22 mu--v 
D) y--22 mu--v--15 mu--f 
E) y--15 mu--v--22 mu--f

Question 9

Genes that are not syntenic are not linked.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following processes can generate recombinant gametes?

Accepted Answer

A) Segregation of alleles in a heterozygote. 
B) Crossing over between two linked heterozygous loci. 
C) Independent assortment of two unlinked heterozygous loci. 
D) Crossing over between two linked heterozygous loci and independent assortment of two unlinked heterozygous loci 
E) Segregation of alleles in a heterozygote, crossing over between two linked heterozygous loci and independent assortment of two unlinked heterozygous loci 
A) Segregation of alleles in a heterozygote. 
B) Crossing over between two linked heterozygous loci. 
C) Independent assortment of two unlinked heterozygous loci. 
D) Crossing over between two linked heterozygous loci and independent assortment of two unlinked heterozygous loci 
E) Segregation of alleles in a heterozygote, crossing over between two linked heterozygous loci and independent assortment of two unlinked heterozygous loci

Question 11

ws; ws; ws+; ws+; ws+; ws+; ws; ws

Accepted Answer

A) First-division segregation pattern 
B) Second-division segregation pattern 
A) First-division segregation pattern 
B) Second-division segregation pattern

Question 12

Chiasmata can be seen through a light microscope and are sites of recombination.

Accepted Answer

A) True 
 B)False

Question 13

The diploid garden pea plant has 14 chromosomes.The haploid fungus Neurospora crassa has 7 chromosomes.Neither organism has separate male and female individuals.Therefore, the number of linkage groups in these two organisms is:

Accepted Answer

A) Garden pea has 14 linkage groups, and Neurospora has 7. 
B) Garden pea has 7 linkage groups, and Neurospora has 7. 
C) Garden pea has 8 linkage groups, and Neurospora has 8. 
D) Gardent pea has 15 linkage groups, and Neurospora has 8. 
A) Garden pea has 14 linkage groups, and Neurospora has 7. 
B) Garden pea has 7 linkage groups, and Neurospora has 7. 
C) Garden pea has 8 linkage groups, and Neurospora has 8. 
D) Gardent pea has 15 linkage groups, and Neurospora has 8.

Question 14

his4/trp1; his4/trp1; HIS4/TRP1;HIS4/TRP

Accepted Answer

A) PD 
B) NPD 
C) T 
D) Cannot be determined 
A) PD 
B) NPD 
C) T 
D) Cannot be determined

Question 15

HIS4/trp1; HIS4/trp1; his4/TRP1; his4/TRP1

Accepted Answer

A) PD 
B) NPD 
C) T 
D) Cannot be determined 
A) PD 
B) NPD 
C) T 
D) Cannot be determined

Question 16

Fungi that produce tetrads typically grow as haploids but can undergo sexual reproduction by combining different mating types.

Accepted Answer

A) True 
 B)False

Question 17

Given this data, which of the following is the most accurate range within which the p value falls, and what can be concluded?

Accepted Answer

A) 0 < p < 0.01, genes C and D are most likely unlinked. 
B) 0 < p < 0.01, genes C and D are most likely linked. 
C) 0.01 < p < 0.05, genes C and D are most likely linked. 
D) 0.01 < p < 0.05, genes C and D are most likely unlinked. 
A) 0 < p < 0.01, genes C and D are most likely unlinked. 
B) 0 < p < 0.01, genes C and D are most likely linked. 
C) 0.01 < p < 0.05, genes C and D are most likely linked. 
D) 0.01 < p < 0.05, genes C and D are most likely unlinked.

Question 18

If the map distance between genes A and B is 10 map units and the map distance between genes B and C is 25 map units, what is the map distance between genes A and C?

Accepted Answer

A) 15 map units 
B) 35 map units 
C) either 15 map units or 35 map units, depending on the order of the genes 
D) The map distance between A and C can not be predicted from these data. 
A) 15 map units 
B) 35 map units 
C) either 15 map units or 35 map units, depending on the order of the genes 
D) The map distance between A and C can not be predicted from these data.

Question 19

ws; ws; ws; ws; ws+; ws+; ws+; ws+

Accepted Answer

A) First-division segregation pattern 
B) Second-division segregation pattern 
A) First-division segregation pattern 
B) Second-division segregation pattern

Question 20

Some of the larger human chromosomes typically contain multiple chiasmata during meiotic prophase.If you were to carefully study the distribution of these chiasmata, what would you find?

Accepted Answer

A) Chiasmata are randomly distributed along chromosomes. 
B) All chromosome pairs have the same number of chiasmata. 
C) A single chromosome pair always has the same number of chiasmata in every meiotic cell. 
D) Chiasmata are spaced along a chromosome arm more regularly than would be expected by chance. 
E) Chiasmata are spaced more irregularly along a chromosome arm than would be expected by chance. 
A) Chiasmata are randomly distributed along chromosomes. 
B) All chromosome pairs have the same number of chiasmata. 
C) A single chromosome pair always has the same number of chiasmata in every meiotic cell. 
D) Chiasmata are spaced along a chromosome arm more regularly than would be expected by chance. 
E) Chiasmata are spaced more irregularly along a chromosome arm than would be expected by chance.

In an ordered octad, every spore is adjacent to at least one spore that is genetically identical to itself.

A woman whose mother is colorblind and whose father has hemophilia A is pregnant with a boy and what is the probability that the baby will have normal vision and blood clotting?

Tetrad analysis shows that crossing over occurs at the four-strand stage (i.e., after replication) because, when two genes are linked,

What is the p value from this test? (Pick the most accurate choice.)

Twin spotting provides evidence of what genetic event?

Two genes are considered linked when F₂ progeny more commonly show the recombinant genotype.

Which of the following linkage maps correctly shows the order and distance between the y, f, and v genes?

Genes that are not syntenic are not linked.

Which of the following processes can generate recombinant gametes?

ws; ws; ws⁺; ws⁺; ws⁺; ws⁺; ws; ws

Chiasmata can be seen through a light microscope and are sites of recombination.

The diploid garden pea plant has 14 chromosomes.The haploid fungus Neurospora crassa has 7 chromosomes.Neither organism has separate male and female individuals.Therefore, the number of linkage groups in these two organisms is:

his4/trp1; his4/trp1; HIS4/TRP1;HIS4/TRP

HIS4/trp1; HIS4/trp1; his4/TRP1; his4/TRP1

Fungi that produce tetrads typically grow as haploids but can undergo sexual reproduction by combining different mating types.

Given this data, which of the following is the most accurate range within which the p value falls, and what can be concluded?

If the map distance between genes A and B is 10 map units and the map distance between genes B and C is 25 map units, what is the map distance between genes A and C?

ws; ws; ws; ws; ws⁺; ws⁺; ws⁺; ws⁺

Some of the larger human chromosomes typically contain multiple chiasmata during meiotic prophase.If you were to carefully study the distribution of these chiasmata, what would you find?

Genetics: The Study of Biological Information

Mendels Principles of Heredity

Extensions to Mendels Laws

The Chromosome Theory of Inheritance

DNA Structure, Replication, and Recombination

Anatomy and Function of a Gene: Dissection Through Mutation

Gene Expression: The Flow of Information From DNA to RNA to Protein

Digital Analysis of Genomes

Analyzing Genomic Information

The Eukaryotic Chromosome

Chromosomal Rearrangements and Changes in Chromosome Number

Bacterial Genetics

Organellar Inheritance

Gene Regulation in Prokaryotes

Gene Regulation in Eukaryotes

Manipulating the Genomes of Eukaryotes

The Genetic Analysis of Development

The Genetics of Cancer

Variation and Selection in Populations

Genetics of Complex Traits

Filters

Exam 5: Linkage, Recombination, and the Mapping of Genes on Chromosomes

In an ordered octad, every spore is adjacent to at least one spore that is genetically identical to itself.

A woman whose mother is colorblind and whose father has hemophilia A is pregnant with a boy and what is the probability that the baby will have normal vision and blood clotting?

Tetrad analysis shows that crossing over occurs at the four-strand stage (i.e., after replication) because, when two genes are linked,

What is the p value from this test? (Pick the most accurate choice.)

Twin spotting provides evidence of what genetic event?

Two genes are considered linked when F2 progeny more commonly show the recombinant genotype.

Which of the following linkage maps correctly shows the order and distance between the y, f, and v genes?

Genes that are not syntenic are not linked.

Which of the following processes can generate recombinant gametes?

ws; ws; ws+; ws+; ws+; ws+; ws; ws

Chiasmata can be seen through a light microscope and are sites of recombination.

The diploid garden pea plant has 14 chromosomes.The haploid fungus Neurospora crassa has 7 chromosomes.Neither organism has separate male and female individuals.Therefore, the number of linkage groups in these two organisms is:

his4/trp1; his4/trp1; HIS4/TRP1;HIS4/TRP

HIS4/trp1; HIS4/trp1; his4/TRP1; his4/TRP1

Fungi that produce tetrads typically grow as haploids but can undergo sexual reproduction by combining different mating types.

Given this data, which of the following is the most accurate range within which the p value falls, and what can be concluded?

If the map distance between genes A and B is 10 map units and the map distance between genes B and C is 25 map units, what is the map distance between genes A and C?

ws; ws; ws; ws; ws+; ws+; ws+; ws+

Some of the larger human chromosomes typically contain multiple chiasmata during meiotic prophase.If you were to carefully study the distribution of these chiasmata, what would you find?

Genetics: The Study of Biological Information

Mendels Principles of Heredity

Extensions to Mendels Laws

The Chromosome Theory of Inheritance

DNA Structure, Replication, and Recombination

Anatomy and Function of a Gene: Dissection Through Mutation

Gene Expression: The Flow of Information From DNA to RNA to Protein

Digital Analysis of Genomes

Analyzing Genomic Information

The Eukaryotic Chromosome

Chromosomal Rearrangements and Changes in Chromosome Number

Bacterial Genetics

Organellar Inheritance

Gene Regulation in Prokaryotes

Gene Regulation in Eukaryotes

Manipulating the Genomes of Eukaryotes

The Genetic Analysis of Development

The Genetics of Cancer

Variation and Selection in Populations

Genetics of Complex Traits

Filters

Two genes are considered linked when F₂ progeny more commonly show the recombinant genotype.

ws; ws; ws⁺; ws⁺; ws⁺; ws⁺; ws; ws

ws; ws; ws; ws; ws⁺; ws⁺; ws⁺; ws⁺