The reason why CFU is more applicable to a culture of Streptococcus than to a culture of E. coli . Introduction: The culture medium or growth medium is a liquid, solid, or semisolid designed to support the growth of cells or microorganisms. The microbial culture is defined as the propagation of the microorganism in a culture or growth medium under controlled laboratory conditions. The microbial culture is used to determine the organism types and its abundance in the sample.

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Answer 1

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Chapter 19, Problem 1SAQ

Summary Introduction

To describe: The reason why CFU is more applicable to a culture of Streptococcus than to a culture of E. coli.

Introduction: The culture medium or growth medium is a liquid, solid, or semisolid designed to support the growth of cells or microorganisms. The microbial culture is defined as the propagation of the microorganism in a culture or growth medium under controlled laboratory conditions. The microbial culture is used to determine the organism types and its abundance in the sample.

Expert Solution & Answer

Explanation of Solution

The colony-forming unit is used to measure the number of viable fungal and bacterial cells in a sample. Streptococcus is spherical-shaped or Gram-positive bacteria that belong to the family Streptococcaceae. Streptococcus forms chains and multiple cells may make up a colony. Thus, the colony-forming units are more applicable to a culture of Streptococcus than to a culture of E. coli that do not form chains.

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Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…

Question #5: Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The genes show independent assortment. Recessive alleles at both loci are required for the facultative apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C. At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype. A facultative apomict male, capable of producing viable pollen, was crossed with a sexually reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following temperatures*: a) 15°C? b) 25°C? *for full credit, show crosses and genotypes where appropriate. Remember to position the female first (left side) in the cross. Type your answer here:

Answer 2

Question

Chapter 19, Problem 1SAQ

Summary Introduction

To describe: The reason why CFU is more applicable to a culture of Streptococcus than to a culture of E. coli.

Introduction: The culture medium or growth medium is a liquid, solid, or semisolid designed to support the growth of cells or microorganisms. The microbial culture is defined as the propagation of the microorganism in a culture or growth medium under controlled laboratory conditions. The microbial culture is used to determine the organism types and its abundance in the sample.

Expert Solution & Answer

Explanation of Solution

The colony-forming unit is used to measure the number of viable fungal and bacterial cells in a sample. Streptococcus is spherical-shaped or Gram-positive bacteria that belong to the family Streptococcaceae. Streptococcus forms chains and multiple cells may make up a colony. Thus, the colony-forming units are more applicable to a culture of Streptococcus than to a culture of E. coli that do not form chains.

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Answer 3

Question

Chapter 19, Problem 1SAQ

Summary Introduction

To describe: The reason why CFU is more applicable to a culture of Streptococcus than to a culture of E. coli.

Introduction: The culture medium or growth medium is a liquid, solid, or semisolid designed to support the growth of cells or microorganisms. The microbial culture is defined as the propagation of the microorganism in a culture or growth medium under controlled laboratory conditions. The microbial culture is used to determine the organism types and its abundance in the sample.

Expert Solution & Answer

Explanation of Solution

The colony-forming unit is used to measure the number of viable fungal and bacterial cells in a sample. Streptococcus is spherical-shaped or Gram-positive bacteria that belong to the family Streptococcaceae. Streptococcus forms chains and multiple cells may make up a colony. Thus, the colony-forming units are more applicable to a culture of Streptococcus than to a culture of E. coli that do not form chains.

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Answer 4

Question

Chapter 19, Problem 1SAQ

Summary Introduction

To describe: The reason why CFU is more applicable to a culture of Streptococcus than to a culture of E. coli.

Introduction: The culture medium or growth medium is a liquid, solid, or semisolid designed to support the growth of cells or microorganisms. The microbial culture is defined as the propagation of the microorganism in a culture or growth medium under controlled laboratory conditions. The microbial culture is used to determine the organism types and its abundance in the sample.

Expert Solution & Answer

Explanation of Solution

The colony-forming unit is used to measure the number of viable fungal and bacterial cells in a sample. Streptococcus is spherical-shaped or Gram-positive bacteria that belong to the family Streptococcaceae. Streptococcus forms chains and multiple cells may make up a colony. Thus, the colony-forming units are more applicable to a culture of Streptococcus than to a culture of E. coli that do not form chains.

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Answer 5

Chapter 19, Problem 1SAQ

Summary Introduction

To describe: The reason why CFU is more applicable to a culture of Streptococcus than to a culture of E. coli.

Introduction: The culture medium or growth medium is a liquid, solid, or semisolid designed to support the growth of cells or microorganisms. The microbial culture is defined as the propagation of the microorganism in a culture or growth medium under controlled laboratory conditions. The microbial culture is used to determine the organism types and its abundance in the sample.

Expert Solution & Answer

Explanation of Solution

The colony-forming unit is used to measure the number of viable fungal and bacterial cells in a sample. Streptococcus is spherical-shaped or Gram-positive bacteria that belong to the family Streptococcaceae. Streptococcus forms chains and multiple cells may make up a colony. Thus, the colony-forming units are more applicable to a culture of Streptococcus than to a culture of E. coli that do not form chains.

Answer 6

Chapter 19, Problem 1SAQ

Summary Introduction

To describe: The reason why CFU is more applicable to a culture of Streptococcus than to a culture of E. coli.

Introduction: The culture medium or growth medium is a liquid, solid, or semisolid designed to support the growth of cells or microorganisms. The microbial culture is defined as the propagation of the microorganism in a culture or growth medium under controlled laboratory conditions. The microbial culture is used to determine the organism types and its abundance in the sample.

Expert Solution & Answer

Explanation of Solution

The colony-forming unit is used to measure the number of viable fungal and bacterial cells in a sample. Streptococcus is spherical-shaped or Gram-positive bacteria that belong to the family Streptococcaceae. Streptococcus forms chains and multiple cells may make up a colony. Thus, the colony-forming units are more applicable to a culture of Streptococcus than to a culture of E. coli that do not form chains.

Answer 7

Chapter 19, Problem 1SAQ

Summary Introduction

To describe: The reason why CFU is more applicable to a culture of Streptococcus than to a culture of E. coli.

Introduction: The culture medium or growth medium is a liquid, solid, or semisolid designed to support the growth of cells or microorganisms. The microbial culture is defined as the propagation of the microorganism in a culture or growth medium under controlled laboratory conditions. The microbial culture is used to determine the organism types and its abundance in the sample.

Answer 8

Expert Solution & Answer

Explanation of Solution

The colony-forming unit is used to measure the number of viable fungal and bacterial cells in a sample. Streptococcus is spherical-shaped or Gram-positive bacteria that belong to the family Streptococcaceae. Streptococcus forms chains and multiple cells may make up a colony. Thus, the colony-forming units are more applicable to a culture of Streptococcus than to a culture of E. coli that do not form chains.