The phenotype and ratio of a cross between green colored flowers of a plant. Introduction: Phenotype refers to the observable traits of organisms, while genotype signifies genetic-makeup or arrangement of genes and alleles of the organism. The phenotype depends on the genotype. The interaction between alleles can be observed as incomplete dominance, which can give rise to three phenotypes even when the phenotype is controlled by only two forms of a gene. In a particular plant species, two alleles control flower color, which can be yellow, green, or blue. Crosses of these plants produce the following offsprings: Parental phenotypes Offspring phenotypes ratio Yellow × yellow All yellow Green × yellow Green or yellow (1:1) Green × blue Blue or green (1:1) Blue × blue All blue

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Answer 1

Question

Chapter 12.2, Problem 3R

Summary Introduction

To review:

The phenotype and ratio of a cross between green colored flowers of a plant.

Introduction:

Phenotype refers to the observable traits of organisms, while genotype signifies genetic-makeup or arrangement of genes and alleles of the organism. The phenotype depends on the genotype. The interaction between alleles can be observed as incomplete dominance, which can give rise to three phenotypes even when the phenotype is controlled by only two forms of a gene.

In a particular plant species, two alleles control flower color, which can be yellow, green, or blue. Crosses of these plants produce the following offsprings:

Parental phenotypes Offspring phenotypes ratio

Yellow × yellow All yellow

Green × yellow Green or yellow (1:1)

Green × blue Blue or green (1:1)

Blue × blue All blue

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In corn plants, a dominant allele Z inhibits kernel color, while the recessive allele z permits color when homozygous. At a different locus, the dominant allele X causes purple kernel color, while the homozygous recessive genotype causes red kernel color. If corn plants heterozygous for both the Z and X genes are crossed, what are the chances that the offspring will have purple kernels? Enter your answer as a decimal fraction in the box (e.g. 0.25).

In snapdragons, red flower color (R) is incompletely dominant over white flower color (r), so that the heterozygote has pink flowers. A red snapdragon is crossed with a white snapdragon, and the F1 are intercrossed to produce F2. What is the genotype and phenotypes of the F1 and F2, along with their expected proportions? If the F1 are backcrossed to the white parent, what will be the expected genotype and phenotype of the offspring? If the F1 are backcrossed to the red parent and the resulting progeny are intercrossed, what is the expected proportions of genotypes and phenotypes in the progeny?

: In poultry, the genotype-phenotype relationships for comb shape are R/– P/–, walnut; R/–p/p, rose, r/r P/–, pea; and r/r p/p, single. What will be the comb characters of the offspring ofthe following crosses?a) A walnut crossed with a single produces offspring that are walnut, rose, pea, and single.b) A rose crossed with a walnut produces offspring that are walnut, rose, pea, and single.c) A rose crossed with a pea produces five walnut and six rose offspring.d) A walnut crossed with a walnut produces one rose, two walnut, and one singleoffspring

Answer 2

Question

Chapter 12.2, Problem 3R

Summary Introduction

To review:

The phenotype and ratio of a cross between green colored flowers of a plant.

Introduction:

Phenotype refers to the observable traits of organisms, while genotype signifies genetic-makeup or arrangement of genes and alleles of the organism. The phenotype depends on the genotype. The interaction between alleles can be observed as incomplete dominance, which can give rise to three phenotypes even when the phenotype is controlled by only two forms of a gene.

In a particular plant species, two alleles control flower color, which can be yellow, green, or blue. Crosses of these plants produce the following offsprings:

Parental phenotypes Offspring phenotypes ratio

Yellow × yellow All yellow

Green × yellow Green or yellow (1:1)

Green × blue Blue or green (1:1)

Blue × blue All blue

Expert Solution & Answer

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Answer 3

Question

Chapter 12.2, Problem 3R

Summary Introduction

To review:

The phenotype and ratio of a cross between green colored flowers of a plant.

Introduction:

Phenotype refers to the observable traits of organisms, while genotype signifies genetic-makeup or arrangement of genes and alleles of the organism. The phenotype depends on the genotype. The interaction between alleles can be observed as incomplete dominance, which can give rise to three phenotypes even when the phenotype is controlled by only two forms of a gene.

In a particular plant species, two alleles control flower color, which can be yellow, green, or blue. Crosses of these plants produce the following offsprings:

Parental phenotypes Offspring phenotypes ratio

Yellow × yellow All yellow

Green × yellow Green or yellow (1:1)

Green × blue Blue or green (1:1)

Blue × blue All blue

Expert Solution & Answer

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Answer 4

Question

Chapter 12.2, Problem 3R

Summary Introduction

To review:

The phenotype and ratio of a cross between green colored flowers of a plant.

Introduction:

Phenotype refers to the observable traits of organisms, while genotype signifies genetic-makeup or arrangement of genes and alleles of the organism. The phenotype depends on the genotype. The interaction between alleles can be observed as incomplete dominance, which can give rise to three phenotypes even when the phenotype is controlled by only two forms of a gene.

In a particular plant species, two alleles control flower color, which can be yellow, green, or blue. Crosses of these plants produce the following offsprings:

Parental phenotypes Offspring phenotypes ratio

Yellow × yellow All yellow

Green × yellow Green or yellow (1:1)

Green × blue Blue or green (1:1)

Blue × blue All blue

Expert Solution & Answer

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Answer 5

Chapter 12.2, Problem 3R

Summary Introduction

To review:

The phenotype and ratio of a cross between green colored flowers of a plant.

Introduction:

Phenotype refers to the observable traits of organisms, while genotype signifies genetic-makeup or arrangement of genes and alleles of the organism. The phenotype depends on the genotype. The interaction between alleles can be observed as incomplete dominance, which can give rise to three phenotypes even when the phenotype is controlled by only two forms of a gene.

In a particular plant species, two alleles control flower color, which can be yellow, green, or blue. Crosses of these plants produce the following offsprings:

Parental phenotypes Offspring phenotypes ratio

Yellow × yellow All yellow

Green × yellow Green or yellow (1:1)

Green × blue Blue or green (1:1)

Blue × blue All blue

Answer 6

Chapter 12.2, Problem 3R

Summary Introduction

To review:

The phenotype and ratio of a cross between green colored flowers of a plant.

Introduction:

Phenotype refers to the observable traits of organisms, while genotype signifies genetic-makeup or arrangement of genes and alleles of the organism. The phenotype depends on the genotype. The interaction between alleles can be observed as incomplete dominance, which can give rise to three phenotypes even when the phenotype is controlled by only two forms of a gene.

In a particular plant species, two alleles control flower color, which can be yellow, green, or blue. Crosses of these plants produce the following offsprings:

Parental phenotypes Offspring phenotypes ratio

Yellow × yellow All yellow

Green × yellow Green or yellow (1:1)

Green × blue Blue or green (1:1)

Blue × blue All blue

Answer 7

Chapter 12.2, Problem 3R

Summary Introduction

To review:

The phenotype and ratio of a cross between green colored flowers of a plant.

Introduction:

Phenotype refers to the observable traits of organisms, while genotype signifies genetic-makeup or arrangement of genes and alleles of the organism. The phenotype depends on the genotype. The interaction between alleles can be observed as incomplete dominance, which can give rise to three phenotypes even when the phenotype is controlled by only two forms of a gene.

In a particular plant species, two alleles control flower color, which can be yellow, green, or blue. Crosses of these plants produce the following offsprings:

Parental phenotypes Offspring phenotypes ratio

Yellow × yellow All yellow

Green × yellow Green or yellow (1:1)

Green × blue Blue or green (1:1)

Blue × blue All blue

Answer 8

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Answer 10

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Answer 11

Ch. 12.1 - Prob. 1R Ch. 12.1 - Prob. 2R Ch. 12.1 - Prob. 3R Ch. 12.1 - Prob. 4R Ch. 12.2 - Prob. 1R Ch. 12.2 - Prob. 2R Ch. 12.2 - Prob. 3R Ch. 12.3 - Prob. 1R Ch. 12.3 - Prob. 2R Ch. 12.3 - Prob. 3R

Solution Summary: The author analyzes the phenotype and ratio of a cross between green-colored flowers, stating that the interaction between alleles can be observed as incomplete dominance.

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Chapter 12 Solutions

Parental phenotypes	Offspring phenotypes ratio
Yellow × yellow	All yellow
Green × yellow	Green or yellow (1:1)
Green × blue	Blue or green (1:1)
Blue × blue	All blue