Whether the genes are linked and also draw a map labeled with map distances. Introduction: Genes that are inherited together with the other gene as they are located on the same chromosome. When a pair or set of genes are on the same chromosome, they are usually inherited together or as a single unit.

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Answer 1

Question

Chapter 4, Problem 42P

a.

Summary Introduction

To determine: Whether the genes are linked and also draw a map labeled with map distances.

Introduction: Genes that are inherited together with the other gene as they are located on the same chromosome. When a pair or set of genes are on the same chromosome, they are usually inherited together or as a single unit.

b.

Summary Introduction

To determine: The genotypes of the triple heterozygote.

Introduction: Heterozygous means that you are carrying one dominant trait and one recessive trait. If an allelic pair has one dominant and other recessive genes are called heterozygous.

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In dogs, dark coat color phenotype (D) is dominant over albino (a) and short hair (S) is dominant over long hair (1). Assume that these phenotypes are caused by two independently assorting genes and write as much as you can, the genotypes of the parents in the cross below. D, a, S and I represent phenotypes Y indicates the presence of progeny with this phenotype , whereas N indicates the absence of progeny with this phenotype PARENTS PHENOTYPES TYPES of PROGENY PHENOTYPE D,S D,I a,S a,l D,S X a,l Y Y

In autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is very near the centromere of the chromosome carrying it. The allele G for green stigma is dominant to g for red stigmas. A homozygous green autotetraploid strain is crossed with a homozygous red autotetraploid strain. a. What is the genotype of the Fl1? b. Show the types of gametes the Fl's may be expected to form and derive the expected proportion of each. Show your solution. c. What phenotypic ratio of green to red is expected if: the Fl's are intercrossed? Show your solution. the Fl's are crossed with red plants? Show your solution. d. If the G locus were 50 or more map units from the centromere, what types and proportions of gametes would the Fl be expected to produce? Derive the expected F2 phenotypic ratio.

In roses, purple flower color is determined by the dominant P allele, while pp homozygotes are white. The presence of long stems is determined by the dominant S allele, while ss homozygotes have short stems. Both mutations are completely penetrant. A test cross was performed between a rose plant of unknown genotype with a white flowered, short stemmed rose plant (pp ss) and the following 200 progeny plants were obtained: 84 white flowers, long stems 16 purple flowers, long stems 82 purple flowers, short stems 18 white flowers, short stems Select the statements below that are TRUE. Select 2 correct answer(s) The P and S genes independently assort during meiosis. The map distance between P and S is 17 CM. The genotype of the progeny plants with purple flowers and short stems is PP ss. The map distance between P and S is 83 CM. The homologs in the plant with unknown genotype are p S and Ps. The homologs in the plant with unknown genotype are PS and p s.

Answer 2

Question

Chapter 4, Problem 42P

a.

Summary Introduction

To determine: Whether the genes are linked and also draw a map labeled with map distances.

Introduction: Genes that are inherited together with the other gene as they are located on the same chromosome. When a pair or set of genes are on the same chromosome, they are usually inherited together or as a single unit.

b.

Summary Introduction

To determine: The genotypes of the triple heterozygote.

Introduction: Heterozygous means that you are carrying one dominant trait and one recessive trait. If an allelic pair has one dominant and other recessive genes are called heterozygous.

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Answer 3

Question

Chapter 4, Problem 42P

a.

Summary Introduction

To determine: Whether the genes are linked and also draw a map labeled with map distances.

Introduction: Genes that are inherited together with the other gene as they are located on the same chromosome. When a pair or set of genes are on the same chromosome, they are usually inherited together or as a single unit.

b.

Summary Introduction

To determine: The genotypes of the triple heterozygote.

Introduction: Heterozygous means that you are carrying one dominant trait and one recessive trait. If an allelic pair has one dominant and other recessive genes are called heterozygous.

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Answer 4

Question

Chapter 4, Problem 42P

a.

Summary Introduction

To determine: Whether the genes are linked and also draw a map labeled with map distances.

Introduction: Genes that are inherited together with the other gene as they are located on the same chromosome. When a pair or set of genes are on the same chromosome, they are usually inherited together or as a single unit.

b.

Summary Introduction

To determine: The genotypes of the triple heterozygote.

Introduction: Heterozygous means that you are carrying one dominant trait and one recessive trait. If an allelic pair has one dominant and other recessive genes are called heterozygous.

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Answer 5

Chapter 4, Problem 42P

a.

Summary Introduction

To determine: Whether the genes are linked and also draw a map labeled with map distances.

Introduction: Genes that are inherited together with the other gene as they are located on the same chromosome. When a pair or set of genes are on the same chromosome, they are usually inherited together or as a single unit.

b.

Summary Introduction

To determine: The genotypes of the triple heterozygote.

Introduction: Heterozygous means that you are carrying one dominant trait and one recessive trait. If an allelic pair has one dominant and other recessive genes are called heterozygous.

Answer 6

Chapter 4, Problem 42P

a.

Summary Introduction

To determine: Whether the genes are linked and also draw a map labeled with map distances.

Introduction: Genes that are inherited together with the other gene as they are located on the same chromosome. When a pair or set of genes are on the same chromosome, they are usually inherited together or as a single unit.

Answer 7

Chapter 4, Problem 42P

a.

Summary Introduction

To determine: Whether the genes are linked and also draw a map labeled with map distances.

Introduction: Genes that are inherited together with the other gene as they are located on the same chromosome. When a pair or set of genes are on the same chromosome, they are usually inherited together or as a single unit.

Answer 8

b.

Summary Introduction

To determine: The genotypes of the triple heterozygote.

Introduction: Heterozygous means that you are carrying one dominant trait and one recessive trait. If an allelic pair has one dominant and other recessive genes are called heterozygous.

Answer 9

b.

Summary Introduction

To determine: The genotypes of the triple heterozygote.

Introduction: Heterozygous means that you are carrying one dominant trait and one recessive trait. If an allelic pair has one dominant and other recessive genes are called heterozygous.

Answer 10

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Answer 11

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Answer 12

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Answer 13

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

Solution Summary: The author illustrates the mapping of a genetic locus.

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To determine: The genotypes of the triple heterozygote.

Introduction: Heterozygous means that you are carrying one dominant trait and one recessive trait. If an allelic pair has one dominant and other recessive genes are called heterozygous.

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Chapter 4 Solutions

Solution Summary: The author illustrates the mapping of a genetic locus.

Concept explainers

Videos

To determine: The genotypes of the triple heterozygote. Introduction: Heterozygous means that you are carrying one dominant trait and one recessive trait. If an allelic pair has one dominant and other recessive genes are called heterozygous.

Want to see the full answer?

Chapter 4 Solutions

To determine: The genotypes of the triple heterozygote.

Introduction: Heterozygous means that you are carrying one dominant trait and one recessive trait. If an allelic pair has one dominant and other recessive genes are called heterozygous.