The parental ditypes showing M1 patterns for both loci. Introduction: Neurospora is a genus of Ascomycete fungi . The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

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Answer 1

Question

Chapter 4, Problem 50P

a.

Summary Introduction

To determine: The parental ditypes showing M1 patterns for both loci.

Introduction: Neurospora is a genus of Ascomycete fungi. The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

b.

Summary Introduction

To determine: The non parental ditypes showing M1 patterns for both loci.

Introduction: The best-known species in this genus is Neurospora crassa, a common model organism in biology. Neurospora intermedia var. Oncogenesis is believed to be the only mold belonging to Neurospora, which is used in food production.

c.

Summary Introduction

To determine: The tetratypes showing an M1 pattern for +/f and M₁₁ pattern for +/p.

Introduction: A single Neurospora crassa gene, al-2, encodes the two functions phytoene synthase and carotene cyclase.

d.

Summary Introduction

To determine: The tetratypes showing an M₁₁ pattern for +/f and an M1 pattern for +/p.

Introduction: Neurospora species are all haploids, spending most of their life cycles in the haploid state. However, the various species of Neurospora show one of three different life cycles called heterothallic, homothallic or pseudohomothallic.

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On Neurospora chromosome 4, the leu3 gene is just to theleft of the centromere and always segregates at the firstdivision, whereas the cys2 gene is to the right of the centromere and shows a second-division segregation frequency of 16 percent. In a cross between a leu3 strain anda cys2 strain, calculate the predicted frequencies of thefollowing seven classes of linear tetrads where l = leu3 andc = cys2. (Ignore double and other multiple crossovers.)

In tomato, the following genes are located on chromosome 2: + tall plant d dwarf plant + uniformly green leaves m mottled green leaves + smooth fruit p pubescent (hairy) fruit Results of the cross +++ / dmp and dmp / dmp were: + + + = 470 + m p = 1 + + p = 14 d + p = 25 d + + = 0 d m p = 441 + m + = 19 d m + = 30 Identify the single and double crossovers among the progeny.

Consider the following two nonhomologous wildtype chromosomes, where letters or numbers represent genes, the "-" represents the centromere of each chromosome, and chromosomes are shown on separate lines. ABCDE-FGHIJK 123-45678 Identify the type of rearrangement shown in each of the following (A-C) and then identify whether it is balanced or unbalanced. Assume that the individual is diploid and heterozygous for the rearrangement. A. ABCDE-FGHIJKGH 123-45678 Rearrangement: [Select] • Balanced or Unbalanced: [Select] B. ABCDGF-EHIJK 123-45678 Rearrangement: [Select] Balanced or Unbalanced: [Select]

Answer 2

Question

Chapter 4, Problem 50P

a.

Summary Introduction

To determine: The parental ditypes showing M1 patterns for both loci.

Introduction: Neurospora is a genus of Ascomycete fungi. The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

b.

Summary Introduction

To determine: The non parental ditypes showing M1 patterns for both loci.

Introduction: The best-known species in this genus is Neurospora crassa, a common model organism in biology. Neurospora intermedia var. Oncogenesis is believed to be the only mold belonging to Neurospora, which is used in food production.

c.

Summary Introduction

To determine: The tetratypes showing an M1 pattern for +/f and M₁₁ pattern for +/p.

Introduction: A single Neurospora crassa gene, al-2, encodes the two functions phytoene synthase and carotene cyclase.

d.

Summary Introduction

To determine: The tetratypes showing an M₁₁ pattern for +/f and an M1 pattern for +/p.

Introduction: Neurospora species are all haploids, spending most of their life cycles in the haploid state. However, the various species of Neurospora show one of three different life cycles called heterothallic, homothallic or pseudohomothallic.

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Answer 3

Question

Chapter 4, Problem 50P

a.

Summary Introduction

To determine: The parental ditypes showing M1 patterns for both loci.

Introduction: Neurospora is a genus of Ascomycete fungi. The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

b.

Summary Introduction

To determine: The non parental ditypes showing M1 patterns for both loci.

Introduction: The best-known species in this genus is Neurospora crassa, a common model organism in biology. Neurospora intermedia var. Oncogenesis is believed to be the only mold belonging to Neurospora, which is used in food production.

c.

Summary Introduction

To determine: The tetratypes showing an M1 pattern for +/f and M₁₁ pattern for +/p.

Introduction: A single Neurospora crassa gene, al-2, encodes the two functions phytoene synthase and carotene cyclase.

d.

Summary Introduction

To determine: The tetratypes showing an M₁₁ pattern for +/f and an M1 pattern for +/p.

Introduction: Neurospora species are all haploids, spending most of their life cycles in the haploid state. However, the various species of Neurospora show one of three different life cycles called heterothallic, homothallic or pseudohomothallic.

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Answer 4

Question

Chapter 4, Problem 50P

a.

Summary Introduction

To determine: The parental ditypes showing M1 patterns for both loci.

Introduction: Neurospora is a genus of Ascomycete fungi. The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

b.

Summary Introduction

To determine: The non parental ditypes showing M1 patterns for both loci.

Introduction: The best-known species in this genus is Neurospora crassa, a common model organism in biology. Neurospora intermedia var. Oncogenesis is believed to be the only mold belonging to Neurospora, which is used in food production.

c.

Summary Introduction

To determine: The tetratypes showing an M1 pattern for +/f and M₁₁ pattern for +/p.

Introduction: A single Neurospora crassa gene, al-2, encodes the two functions phytoene synthase and carotene cyclase.

d.

Summary Introduction

To determine: The tetratypes showing an M₁₁ pattern for +/f and an M1 pattern for +/p.

Introduction: Neurospora species are all haploids, spending most of their life cycles in the haploid state. However, the various species of Neurospora show one of three different life cycles called heterothallic, homothallic or pseudohomothallic.

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Answer 5

Chapter 4, Problem 50P

a.

Summary Introduction

To determine: The parental ditypes showing M1 patterns for both loci.

Introduction: Neurospora is a genus of Ascomycete fungi. The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

b.

Summary Introduction

To determine: The non parental ditypes showing M1 patterns for both loci.

Introduction: The best-known species in this genus is Neurospora crassa, a common model organism in biology. Neurospora intermedia var. Oncogenesis is believed to be the only mold belonging to Neurospora, which is used in food production.

c.

Summary Introduction

To determine: The tetratypes showing an M1 pattern for +/f and M₁₁ pattern for +/p.

Introduction: A single Neurospora crassa gene, al-2, encodes the two functions phytoene synthase and carotene cyclase.

d.

Summary Introduction

To determine: The tetratypes showing an M₁₁ pattern for +/f and an M1 pattern for +/p.

Introduction: Neurospora species are all haploids, spending most of their life cycles in the haploid state. However, the various species of Neurospora show one of three different life cycles called heterothallic, homothallic or pseudohomothallic.

Answer 6

Chapter 4, Problem 50P

a.

Summary Introduction

To determine: The parental ditypes showing M1 patterns for both loci.

Introduction: Neurospora is a genus of Ascomycete fungi. The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

Answer 7

Chapter 4, Problem 50P

a.

Summary Introduction

To determine: The parental ditypes showing M1 patterns for both loci.

Introduction: Neurospora is a genus of Ascomycete fungi. The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

Answer 8

b.

Summary Introduction

To determine: The non parental ditypes showing M1 patterns for both loci.

Introduction: The best-known species in this genus is Neurospora crassa, a common model organism in biology. Neurospora intermedia var. Oncogenesis is believed to be the only mold belonging to Neurospora, which is used in food production.

Answer 9

b.

Summary Introduction

To determine: The non parental ditypes showing M1 patterns for both loci.

Introduction: The best-known species in this genus is Neurospora crassa, a common model organism in biology. Neurospora intermedia var. Oncogenesis is believed to be the only mold belonging to Neurospora, which is used in food production.

Answer 10

c.

Summary Introduction

To determine: The tetratypes showing an M1 pattern for +/f and M₁₁ pattern for +/p.

Introduction: A single Neurospora crassa gene, al-2, encodes the two functions phytoene synthase and carotene cyclase.

Answer 11

c.

Summary Introduction

To determine: The tetratypes showing an M1 pattern for +/f and M₁₁ pattern for +/p.

Introduction: A single Neurospora crassa gene, al-2, encodes the two functions phytoene synthase and carotene cyclase.

Answer 12

d.

Summary Introduction

To determine: The tetratypes showing an M₁₁ pattern for +/f and an M1 pattern for +/p.

Introduction: Neurospora species are all haploids, spending most of their life cycles in the haploid state. However, the various species of Neurospora show one of three different life cycles called heterothallic, homothallic or pseudohomothallic.

Answer 13

d.

Summary Introduction

To determine: The tetratypes showing an M₁₁ pattern for +/f and an M1 pattern for +/p.

Introduction: Neurospora species are all haploids, spending most of their life cycles in the haploid state. However, the various species of Neurospora show one of three different life cycles called heterothallic, homothallic or pseudohomothallic.

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 parental ditypes showing M1 patterns for both loci. Introduction: Neurospora is a genus of Ascomycete fungi . The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

Solution Summary: The author explains that Neurospora is a genus of Ascomycete fungi, and the birth of an affected individual depends on the unique opportunity union of unrelated heterozygous parents.

Concept explainers

Videos

To determine: The parental ditypes showing M1 patterns for both loci.

Introduction: Neurospora is a genus of Ascomycete fungi. The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

To determine: The tetratypes showing an M1 pattern for +/f and M₁₁ pattern for +/p.

Introduction: A single Neurospora crassa gene, al-2, encodes the two functions phytoene synthase and carotene cyclase.

Want to see the full answer?

Chapter 4 Solutions

The parental ditypes showing M1 patterns for both loci. Introduction: Neurospora is a genus of Ascomycete fungi . The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

Solution Summary: The author explains that Neurospora is a genus of Ascomycete fungi, and the birth of an affected individual depends on the unique opportunity union of unrelated heterozygous parents.

Concept explainers

Videos

To determine: The parental ditypes showing M1 patterns for both loci. Introduction: Neurospora is a genus of Ascomycete fungi. The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

To determine: The tetratypes showing an M1 pattern for +/f and M11 pattern for +/p. Introduction: A single Neurospora crassa gene, al-2, encodes the two functions phytoene synthase and carotene cyclase.

Want to see the full answer?

Chapter 4 Solutions

To determine: The parental ditypes showing M1 patterns for both loci.

Introduction: Neurospora is a genus of Ascomycete fungi. The genus name, meaning "nerve spore," refers to the characteristic striations on the spores that resemble axons.

To determine: The tetratypes showing an M1 pattern for +/f and M₁₁ pattern for +/p.

Introduction: A single Neurospora crassa gene, al-2, encodes the two functions phytoene synthase and carotene cyclase.