The genes that are linked. Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

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Answer 1

Question

Chapter 4, Problem 55P

a.

Summary Introduction

To determine: The genes that are linked.

Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

b.

Summary Introduction

To determine: The genotypes if two pure-breeding lines is crossed to produce the heterozygous individual.

Introduction: Pure-breeding creates a limited gene pool, and purebred animal breeds are also susceptible to a wide range of congenital health problems.

c.

Summary Introduction

To determine: The sketch of a linkage map of the linked genes, and the distances in map units.

Introduction: A linkage map is a table for a species or experimental population that shows the position of its known genes or genetic markers relative to each other in terms of recombination frequency, rather than a specific physical distance along each chromosome.

d.

Summary Introduction

To determine: The calculation of an interference value.

Introduction: The crossovers in adjacent chromosome regions independent or does a crossover in one area affect the likelihood of there being a crossover in a neighboring province. It turns out that often they are not separate, and the interaction is called interference.

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Consider the following dihybrid testcross: B/b • E/e × b/b • e/e For the progeny from this testcross, determine the relative proportions (from 0% to 100%) of each genotype if the two genes: a) are linked (dominant alleles in cis conformation) with no crossing over: Be/be: be/be: BE/be: bE/be: b) assort independently. B/b; E/e: B/b; e/e: b/b; E/e: b/b; e/e: c) are linked (dominant alleles in cis conformation) and 20 map units apart. Be/be: be/be: BE/be: bE/be:

In a species of the cat family, eye color can be gray, blue, green, or brown, and each trait is true breeding. In separate crosses involving homozygous parents, the following data were obtained: Cross P1 F1 F2 A green * gray all green 3/4 green: 1/4 gray B green * brown all green 3/4 green: 1/4 brown C gray * brown all green 9/16 green: 3/16 brown 3/16 gray: 1/16 blue (a) Analyze the data. How many genes are involved? Define gene symbols and indicate which genotypes yield each phenotype. (b) In a cross between a gray-eyed cat and one of unknown genotype and phenotype, the F1 generation was not observed. However, the F2 resulted in the same F2 ratio as in cross C. Determine the genotypes and phenotypes of the unknown P1 and F1 cats.

In venetian violets, three phenotypes occur with respect to flower color: a deep violet (almost back), a white, and a pale lavender. Two pale lavender flowered plants have been crossed. The F1 from this cross has individuals with deep violet flowers, with pale lavender flowers, and individuals with white flowers. A. what are the parent genotypes? B. what would the expected phenotypic ratio be in these F1 plants?

Answer 2

Question

Chapter 4, Problem 55P

a.

Summary Introduction

To determine: The genes that are linked.

Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

b.

Summary Introduction

To determine: The genotypes if two pure-breeding lines is crossed to produce the heterozygous individual.

Introduction: Pure-breeding creates a limited gene pool, and purebred animal breeds are also susceptible to a wide range of congenital health problems.

c.

Summary Introduction

To determine: The sketch of a linkage map of the linked genes, and the distances in map units.

Introduction: A linkage map is a table for a species or experimental population that shows the position of its known genes or genetic markers relative to each other in terms of recombination frequency, rather than a specific physical distance along each chromosome.

d.

Summary Introduction

To determine: The calculation of an interference value.

Introduction: The crossovers in adjacent chromosome regions independent or does a crossover in one area affect the likelihood of there being a crossover in a neighboring province. It turns out that often they are not separate, and the interaction is called interference.

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Answer 3

Question

Chapter 4, Problem 55P

a.

Summary Introduction

To determine: The genes that are linked.

Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

b.

Summary Introduction

To determine: The genotypes if two pure-breeding lines is crossed to produce the heterozygous individual.

Introduction: Pure-breeding creates a limited gene pool, and purebred animal breeds are also susceptible to a wide range of congenital health problems.

c.

Summary Introduction

To determine: The sketch of a linkage map of the linked genes, and the distances in map units.

Introduction: A linkage map is a table for a species or experimental population that shows the position of its known genes or genetic markers relative to each other in terms of recombination frequency, rather than a specific physical distance along each chromosome.

d.

Summary Introduction

To determine: The calculation of an interference value.

Introduction: The crossovers in adjacent chromosome regions independent or does a crossover in one area affect the likelihood of there being a crossover in a neighboring province. It turns out that often they are not separate, and the interaction is called interference.

Expert Solution & Answer

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Answer 4

Question

Chapter 4, Problem 55P

a.

Summary Introduction

To determine: The genes that are linked.

Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

b.

Summary Introduction

To determine: The genotypes if two pure-breeding lines is crossed to produce the heterozygous individual.

Introduction: Pure-breeding creates a limited gene pool, and purebred animal breeds are also susceptible to a wide range of congenital health problems.

c.

Summary Introduction

To determine: The sketch of a linkage map of the linked genes, and the distances in map units.

Introduction: A linkage map is a table for a species or experimental population that shows the position of its known genes or genetic markers relative to each other in terms of recombination frequency, rather than a specific physical distance along each chromosome.

d.

Summary Introduction

To determine: The calculation of an interference value.

Introduction: The crossovers in adjacent chromosome regions independent or does a crossover in one area affect the likelihood of there being a crossover in a neighboring province. It turns out that often they are not separate, and the interaction is called interference.

Expert Solution & Answer

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Answer 5

Chapter 4, Problem 55P

a.

Summary Introduction

To determine: The genes that are linked.

Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

b.

Summary Introduction

To determine: The genotypes if two pure-breeding lines is crossed to produce the heterozygous individual.

Introduction: Pure-breeding creates a limited gene pool, and purebred animal breeds are also susceptible to a wide range of congenital health problems.

c.

Summary Introduction

To determine: The sketch of a linkage map of the linked genes, and the distances in map units.

Introduction: A linkage map is a table for a species or experimental population that shows the position of its known genes or genetic markers relative to each other in terms of recombination frequency, rather than a specific physical distance along each chromosome.

d.

Summary Introduction

To determine: The calculation of an interference value.

Introduction: The crossovers in adjacent chromosome regions independent or does a crossover in one area affect the likelihood of there being a crossover in a neighboring province. It turns out that often they are not separate, and the interaction is called interference.

Answer 6

Chapter 4, Problem 55P

a.

Summary Introduction

To determine: The genes that are linked.

Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

Answer 7

Chapter 4, Problem 55P

a.

Summary Introduction

To determine: The genes that are linked.

Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

Answer 8

b.

Summary Introduction

To determine: The genotypes if two pure-breeding lines is crossed to produce the heterozygous individual.

Introduction: Pure-breeding creates a limited gene pool, and purebred animal breeds are also susceptible to a wide range of congenital health problems.

Answer 9

b.

Summary Introduction

To determine: The genotypes if two pure-breeding lines is crossed to produce the heterozygous individual.

Introduction: Pure-breeding creates a limited gene pool, and purebred animal breeds are also susceptible to a wide range of congenital health problems.

Answer 10

c.

Summary Introduction

To determine: The sketch of a linkage map of the linked genes, and the distances in map units.

Introduction: A linkage map is a table for a species or experimental population that shows the position of its known genes or genetic markers relative to each other in terms of recombination frequency, rather than a specific physical distance along each chromosome.

Answer 11

c.

Summary Introduction

To determine: The sketch of a linkage map of the linked genes, and the distances in map units.

Introduction: A linkage map is a table for a species or experimental population that shows the position of its known genes or genetic markers relative to each other in terms of recombination frequency, rather than a specific physical distance along each chromosome.

Answer 12

d.

Summary Introduction

To determine: The calculation of an interference value.

Introduction: The crossovers in adjacent chromosome regions independent or does a crossover in one area affect the likelihood of there being a crossover in a neighboring province. It turns out that often they are not separate, and the interaction is called interference.

Answer 13

d.

Summary Introduction

To determine: The calculation of an interference value.

Introduction: The crossovers in adjacent chromosome regions independent or does a crossover in one area affect the likelihood of there being a crossover in a neighboring province. It turns out that often they are not separate, and the interaction is called interference.

Answer 14

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Answer 15

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Answer 16

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Answer 17

Ch. 4 - Prob. 1P Ch. 4 - Prob. 5P Ch. 4 - Prob. 12P Ch. 4 - Prob. 13P Ch. 4 - Prob. 14P Ch. 4 - Prob. 15P Ch. 4 - Prob. 16P Ch. 4 - Prob. 17P Ch. 4 - Prob. 18P Ch. 4 - Prob. 19P

The genes that are linked. Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

Concept explainers

Videos

To determine: The genes that are linked.

Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

To determine: The genotypes if two pure-breeding lines is crossed to produce the heterozygous individual.

Introduction: Pure-breeding creates a limited gene pool, and purebred animal breeds are also susceptible to a wide range of congenital health problems.

Want to see the full answer?

Chapter 4 Solutions

The genes that are linked. Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

Concept explainers

Videos

To determine: The genes that are linked. Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

To determine: The genotypes if two pure-breeding lines is crossed to produce the heterozygous individual. Introduction: Pure-breeding creates a limited gene pool, and purebred animal breeds are also susceptible to a wide range of congenital health problems.

Want to see the full answer?

Chapter 4 Solutions

To determine: The genes that are linked.

Introduction: A gene is a sequence of nucleotides in DNA or RNA that codes for a molecule that has a function.

To determine: The genotypes if two pure-breeding lines is crossed to produce the heterozygous individual.

Introduction: Pure-breeding creates a limited gene pool, and purebred animal breeds are also susceptible to a wide range of congenital health problems.