The number of genes involved in the inheritance of color pattern. Introduction: According to Mendelian inheritance , a single character is controlled by one or more pairs of alleles. These alleles can be either dominant or recessive. Usually, a dominant allele masks the expression of a recessive allele. If the alleles are identical, they are called homozygous and if they are non-identical, the alleles are said to be heterozygotes.

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Features of a Concept Features of a Concept Characteristics are discrete; that is, they are unitary. Genetic features have alternative forms, and each feature is inherited from one of the two parents. These are called alleles. One allele is dominant over the other allele. The dominant allele is reflected in the phenotype. Random segregation creates the gametes. The heterozygotic individuals produce gametes with an equal frequency of both alleles. Genes are unlinked; that is, different traits arise from the independent assortment.

Chapter 14, Problem 14GP

Summary Introduction

To determine: The number of genes involved in the inheritance of color pattern.

Introduction: According to Mendelian inheritance, a single character is controlled by one or more pairs of alleles. These alleles can be either dominant or recessive. Usually, a dominant allele masks the expression of a recessive allele. If the alleles are identical, they are called homozygous and if they are non-identical, the alleles are said to be heterozygotes.

Summary Introduction

To explain: The reason for the occurrence of 9:6:1 ratio in the F2 generation.

Introduction: The dominant trait is expressed both in homozygous and heterozygous conditions, but a recessive allele is expressed only in homozygous condition, as the dominant allele can mask the trait produced by a recessive allele.

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The production of purple pigment in a certain species of flower is dependent upon two gene loci. You cross two purple flowered plants that are heterozygous at each gene locus. The offspring show the following phenotypes: 91 purple and 68 white.a. What is the simplified phenotypic ratio is observed in the offspring? What mode of inheritance is associated with this ratio? b. What is/are the genotype(s) of the purple offspring? What is/are the genotype(s) of the white offspring?

In corn, seedling color is determined by genes at two loci (C/c and D/d). Suppose that you cross a pure-breeding green seedling with a pure-breeding yellow seedling and obtain only green seedlings in the F1 generation. You then cross two of the F1 seedlings and obtain the following progeny for the F2 generation: 138 green seedlings, 33 virescent-white seedlings, and 10 yellow seedlings. What form of epistasis would explain these data?

Two true breeding pea plants-one with yellow round seeds (YYRR) and the other with green wrinkled seeds (yyrr)-were crossed. The F1 plants will be dihybrid heterozygous for both the characters (yyRr). The plants were self-pollinated. Will the Y and R alleles always stay together, generation after generation? Or are seed color and seed shape inherited independently of each other? Show how you come to a conclusion.

Answer 2

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Features of a Concept Features of a Concept Characteristics are discrete; that is, they are unitary. Genetic features have alternative forms, and each feature is inherited from one of the two parents. These are called alleles. One allele is dominant over the other allele. The dominant allele is reflected in the phenotype. Random segregation creates the gametes. The heterozygotic individuals produce gametes with an equal frequency of both alleles. Genes are unlinked; that is, different traits arise from the independent assortment.

Chapter 14, Problem 14GP

Summary Introduction

To determine: The number of genes involved in the inheritance of color pattern.

Introduction: According to Mendelian inheritance, a single character is controlled by one or more pairs of alleles. These alleles can be either dominant or recessive. Usually, a dominant allele masks the expression of a recessive allele. If the alleles are identical, they are called homozygous and if they are non-identical, the alleles are said to be heterozygotes.

Summary Introduction

To explain: The reason for the occurrence of 9:6:1 ratio in the F2 generation.

Introduction: The dominant trait is expressed both in homozygous and heterozygous conditions, but a recessive allele is expressed only in homozygous condition, as the dominant allele can mask the trait produced by a recessive allele.

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Answer 3

Question

Features of a Concept Features of a Concept Characteristics are discrete; that is, they are unitary. Genetic features have alternative forms, and each feature is inherited from one of the two parents. These are called alleles. One allele is dominant over the other allele. The dominant allele is reflected in the phenotype. Random segregation creates the gametes. The heterozygotic individuals produce gametes with an equal frequency of both alleles. Genes are unlinked; that is, different traits arise from the independent assortment.

Chapter 14, Problem 14GP

Summary Introduction

To determine: The number of genes involved in the inheritance of color pattern.

Introduction: According to Mendelian inheritance, a single character is controlled by one or more pairs of alleles. These alleles can be either dominant or recessive. Usually, a dominant allele masks the expression of a recessive allele. If the alleles are identical, they are called homozygous and if they are non-identical, the alleles are said to be heterozygotes.

Summary Introduction

To explain: The reason for the occurrence of 9:6:1 ratio in the F2 generation.

Introduction: The dominant trait is expressed both in homozygous and heterozygous conditions, but a recessive allele is expressed only in homozygous condition, as the dominant allele can mask the trait produced by a recessive allele.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

Question

Features of a Concept Features of a Concept Characteristics are discrete; that is, they are unitary. Genetic features have alternative forms, and each feature is inherited from one of the two parents. These are called alleles. One allele is dominant over the other allele. The dominant allele is reflected in the phenotype. Random segregation creates the gametes. The heterozygotic individuals produce gametes with an equal frequency of both alleles. Genes are unlinked; that is, different traits arise from the independent assortment.

Chapter 14, Problem 14GP

Summary Introduction

To determine: The number of genes involved in the inheritance of color pattern.

Introduction: According to Mendelian inheritance, a single character is controlled by one or more pairs of alleles. These alleles can be either dominant or recessive. Usually, a dominant allele masks the expression of a recessive allele. If the alleles are identical, they are called homozygous and if they are non-identical, the alleles are said to be heterozygotes.

Summary Introduction

To explain: The reason for the occurrence of 9:6:1 ratio in the F2 generation.

Introduction: The dominant trait is expressed both in homozygous and heterozygous conditions, but a recessive allele is expressed only in homozygous condition, as the dominant allele can mask the trait produced by a recessive allele.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 14, Problem 14GP

Summary Introduction

To determine: The number of genes involved in the inheritance of color pattern.

Introduction: According to Mendelian inheritance, a single character is controlled by one or more pairs of alleles. These alleles can be either dominant or recessive. Usually, a dominant allele masks the expression of a recessive allele. If the alleles are identical, they are called homozygous and if they are non-identical, the alleles are said to be heterozygotes.

Summary Introduction

To explain: The reason for the occurrence of 9:6:1 ratio in the F2 generation.

Introduction: The dominant trait is expressed both in homozygous and heterozygous conditions, but a recessive allele is expressed only in homozygous condition, as the dominant allele can mask the trait produced by a recessive allele.

Answer 6

Chapter 14, Problem 14GP

Summary Introduction

To determine: The number of genes involved in the inheritance of color pattern.

Introduction: According to Mendelian inheritance, a single character is controlled by one or more pairs of alleles. These alleles can be either dominant or recessive. Usually, a dominant allele masks the expression of a recessive allele. If the alleles are identical, they are called homozygous and if they are non-identical, the alleles are said to be heterozygotes.

Answer 7

Chapter 14, Problem 14GP

Summary Introduction

To determine: The number of genes involved in the inheritance of color pattern.

Introduction: According to Mendelian inheritance, a single character is controlled by one or more pairs of alleles. These alleles can be either dominant or recessive. Usually, a dominant allele masks the expression of a recessive allele. If the alleles are identical, they are called homozygous and if they are non-identical, the alleles are said to be heterozygotes.

Answer 8

Summary Introduction

To explain: The reason for the occurrence of 9:6:1 ratio in the F2 generation.

Introduction: The dominant trait is expressed both in homozygous and heterozygous conditions, but a recessive allele is expressed only in homozygous condition, as the dominant allele can mask the trait produced by a recessive allele.

Answer 9

Summary Introduction

To explain: The reason for the occurrence of 9:6:1 ratio in the F2 generation.

Introduction: The dominant trait is expressed both in homozygous and heterozygous conditions, but a recessive allele is expressed only in homozygous condition, as the dominant allele can mask the trait produced by a recessive allele.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 14 - Fill in the following diagram of a cross of...Ch. 14 - A tall pea plant is crossed with a recessive dwarf...Ch. 14 - A true-breeding tall, purple-flowered pea plant...Ch. 14 - a. In the following cross, what is the probability...Ch. 14 - Prob. 5IQ Ch. 14 - Consider an example in which the M/m gene (for...Ch. 14 - The height of spike weed is a result of polygenic...Ch. 14 - Consider the following pedigree for the trait...Ch. 14 - a. What is the probability that a mating between...Ch. 14 - If two prospective parents both have siblings who...

Solution Summary: The author explains that two genes are responsible for the inheritance of color.

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