a. To determine: The genotype of the mutant plant. Introduction: The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

Question

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Answer 1

Question

Chapter 3, Problem 44P

Summary Introduction

a.

To determine:

The genotype of the mutant plant.

Introduction:

The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

Summary Introduction

b.

To determine:

The expected fraction of normal plants among the F₂ in a cross of type AAbbcc×aaBBCC.

Introduction:

For the normal flower morphology, the plant needs only single dominant allele of any one of the three genes.

Summary Introduction

c.

To determine:

The model that describes the way Arabidopsis thaliana genome acquired redundant genes.

Introduction:

The genes that perform the same function are called redundant genes. This type of gene arises from gene duplication.

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In a variety of newly discovered rose plant, flowers are either white or red. Two genes were discovered to control flower color. Both genes, A and B, work in tandem in a biochemical pathway, and dominant forms of both genes are required for red flowers. A doubly-homozygous red-flowered plant is crossed with a doubly-homozygous white-flowered plant. The F1 offspring all have red flowers and are self-crossed to produce the F2. Determine the ratios of phenotypes in the F2 generation.

In corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the male part of corn plants (i.e. the tassel) unable to produce fertile pollen; the female parts, however, remain receptive to pollination by pollen from male-fertile corn plants. However, the presence of a nuclear fertility restorer gene F restores fertility to male-sterile lines. Using the following color-coded circles, simulate the crosses indicated below. Put the illustrations of crosses in the spaces provided. Be sure to include in the labels the genotypes and phenotypes of the offspring in each cross. Big light green circle - male-sterile cytoplasm Big orange circle - male-fertile cytoplasm Small orange circle - FF nucleus Small half-light green-half-orange circle - Ff nucleus Small light-green circle - ff nucleus

In Figure 6-2, explain how the mutant polypeptide actsas a spoiler and what its net effect on phenotype is.

Answer 2

Question

Chapter 3, Problem 44P

Summary Introduction

a.

To determine:

The genotype of the mutant plant.

Introduction:

The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

Summary Introduction

b.

To determine:

The expected fraction of normal plants among the F₂ in a cross of type AAbbcc×aaBBCC.

Introduction:

For the normal flower morphology, the plant needs only single dominant allele of any one of the three genes.

Summary Introduction

c.

To determine:

The model that describes the way Arabidopsis thaliana genome acquired redundant genes.

Introduction:

The genes that perform the same function are called redundant genes. This type of gene arises from gene duplication.

Expert Solution & Answer

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Answer 3

Question

Chapter 3, Problem 44P

Summary Introduction

a.

To determine:

The genotype of the mutant plant.

Introduction:

The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

Summary Introduction

b.

To determine:

The expected fraction of normal plants among the F₂ in a cross of type AAbbcc×aaBBCC.

Introduction:

For the normal flower morphology, the plant needs only single dominant allele of any one of the three genes.

Summary Introduction

c.

To determine:

The model that describes the way Arabidopsis thaliana genome acquired redundant genes.

Introduction:

The genes that perform the same function are called redundant genes. This type of gene arises from gene duplication.

Expert Solution & Answer

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See solution

Answer 4

Question

Chapter 3, Problem 44P

Summary Introduction

a.

To determine:

The genotype of the mutant plant.

Introduction:

The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

Summary Introduction

b.

To determine:

The expected fraction of normal plants among the F₂ in a cross of type AAbbcc×aaBBCC.

Introduction:

For the normal flower morphology, the plant needs only single dominant allele of any one of the three genes.

Summary Introduction

c.

To determine:

The model that describes the way Arabidopsis thaliana genome acquired redundant genes.

Introduction:

The genes that perform the same function are called redundant genes. This type of gene arises from gene duplication.

Expert Solution & Answer

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Answer 5

Chapter 3, Problem 44P

Summary Introduction

a.

To determine:

The genotype of the mutant plant.

Introduction:

The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

Summary Introduction

b.

To determine:

The expected fraction of normal plants among the F₂ in a cross of type AAbbcc×aaBBCC.

Introduction:

For the normal flower morphology, the plant needs only single dominant allele of any one of the three genes.

Summary Introduction

c.

To determine:

The model that describes the way Arabidopsis thaliana genome acquired redundant genes.

Introduction:

The genes that perform the same function are called redundant genes. This type of gene arises from gene duplication.

Answer 6

Chapter 3, Problem 44P

Summary Introduction

a.

To determine:

The genotype of the mutant plant.

Introduction:

The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

Answer 7

Chapter 3, Problem 44P

Summary Introduction

a.

To determine:

The genotype of the mutant plant.

Introduction:

The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

Answer 8

Summary Introduction

b.

To determine:

The expected fraction of normal plants among the F₂ in a cross of type AAbbcc×aaBBCC.

Introduction:

For the normal flower morphology, the plant needs only single dominant allele of any one of the three genes.

Answer 9

Summary Introduction

b.

To determine:

The expected fraction of normal plants among the F₂ in a cross of type AAbbcc×aaBBCC.

Introduction:

For the normal flower morphology, the plant needs only single dominant allele of any one of the three genes.

Answer 10

Summary Introduction

c.

To determine:

The model that describes the way Arabidopsis thaliana genome acquired redundant genes.

Introduction:

The genes that perform the same function are called redundant genes. This type of gene arises from gene duplication.

Answer 11

Summary Introduction

c.

To determine:

The model that describes the way Arabidopsis thaliana genome acquired redundant genes.

Introduction:

The genes that perform the same function are called redundant genes. This type of gene arises from gene duplication.

Answer 12

Expert Solution & Answer

Answer 13

Expert Solution & Answer

Answer 14

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Answer 15

Ch. 3 - For each of the terms in the left column, choose...Ch. 3 - In four-oclocks, the allele for red flowers is...Ch. 3 - The Aa heterozygous snapdragons in Fig. 3.3 are...Ch. 3 - Recall from Chapter 2 Fig. 2.20 that Mendels R...Ch. 3 - In the fruit fly Drosophila melanogaster, very...Ch. 3 - A cross between two plants that both have yellow...Ch. 3 - In radishes, color and shape are each controlled...Ch. 3 - A wild legume with white flowers and long pods is...Ch. 3 - Assuming no involvement of the Bombay phenotype in...Ch. 3 - Several genes in humans in addition to the ABO...

a. To determine: The genotype of the mutant plant. Introduction: The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

Solution Summary: The author explains that the mutant plant does not have petals, anthers, or carpels and has recessive mutant alleles a, b, and c.

a.

To determine:

The genotype of the mutant plant.

Introduction:

The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

b.

To determine:

The expected fraction of normal plants among the F₂ in a cross of type AAbbcc×aaBBCC.

Introduction:

For the normal flower morphology, the plant needs only single dominant allele of any one of the three genes.

c.

To determine:

The model that describes the way Arabidopsis thaliana genome acquired redundant genes.

Introduction:

The genes that perform the same function are called redundant genes. This type of gene arises from gene duplication.

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Chapter 3 Solutions

a. To determine: The genotype of the mutant plant. Introduction: The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

Solution Summary: The author explains that the mutant plant does not have petals, anthers, or carpels and has recessive mutant alleles a, b, and c.

a. To determine: The genotype of the mutant plant. Introduction: The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

b. To determine: The expected fraction of normal plants among the F2 in a cross of type AAbbcc×aaBBCC. Introduction: For the normal flower morphology, the plant needs only single dominant allele of any one of the three genes.

c. To determine: The model that describes the way Arabidopsis thaliana genome acquired redundant genes. Introduction: The genes that perform the same function are called redundant genes. This type of gene arises from gene duplication.

Want to see the full answer?

Chapter 3 Solutions

a.

To determine:

The genotype of the mutant plant.

Introduction:

The mutant plant has abnormal flower morphology. The flower of the mutant plant does not have petals, anthers, or carpels and formed entirely of sepals.

b.

To determine:

The expected fraction of normal plants among the F₂ in a cross of type AAbbcc×aaBBCC.

Introduction:

For the normal flower morphology, the plant needs only single dominant allele of any one of the three genes.

c.

To determine:

The model that describes the way Arabidopsis thaliana genome acquired redundant genes.

Introduction:

The genes that perform the same function are called redundant genes. This type of gene arises from gene duplication.