The reason for no growth of the unmixed bacterial strains in the Lederberg and Tatum experiment. Introduction: The experiment performed by Lederberg and Tatum was conducted to understand the mechanism of transformation in bacteria. The experiment was later continued by Davis to finally prove that direct contact is pre-requisite for conjugation to occur.

Question

Want to see the full answer?

Answer 1

Question

Chapter 19.5, Problem 2EQ

Summary Introduction

To determine: The reason for no growth of the unmixed bacterial strains in the Lederberg and Tatum experiment.

Introduction: The experiment performed by Lederberg and Tatum was conducted to understand the mechanism of transformation in bacteria. The experiment was later continued by Davis to finally prove that direct contact is pre-requisite for conjugation to occur.

Summary Introduction

To determine: The significance of the mixed strains on the culture plate.

Introduction: The mixing of the strains met– bio– thr+ pro+ and met+ bio+ thr– pro– did not produce colonies due to lack of the mechanisms to synthesize the required amino acids. However, the mixing of the strains lead to production of new strain, which was capable of growing on the culture media

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Question -Esther is completing her PhD project in bacterial distribution in mangroves and theirbiochemical characteristics. She manages to isolate and identify around 80 differentbacterial species from the various mangrove sites. She preserves the isolates by growingthem on a tryptic soy agar supplemented with sea salt and re-streaks them every week. After8 months she notices that some of the isolates have changed their genetic sequence whencompared to the initially identified sequence. Using a diagram explain what could havehappened to the isolates when she re-streaked them repeatedly and recommend a solutionto prevent this from occurring in the future and give explanation why it is moreadvantageous.

Droplet based single cell DNA sequencing uses a microfluidic platform which generates droplets encapsulating individual cells. A micrograph of such a device [Zilionis et al, Nature Protocols 2016] is presented in Figure Q3. The channels are 25 μm deep. (a) (b) Oil Figure Q3. Micrograph of the microfluidic droplet device. Scale bars are 100 µm. Adapted from Zilionis et al, Nature Protocols 2016. Red arrowheads show individual cells, and black arrows indicate flow direction. (c) RT/lysis reagents Cells Barcoding hydrogel beads A company wants to explore the design of a prototype of the device made from PDMS. Describe a suitable fabrication process, explaining the rationale behind each individual step. Schematics can be drawn to illustrate your response. You may want to refer to the datasheets at the end of the script. Testing of the prototype was successful and the company wants to explore the feasibility of manufacturing the device from glass. Describe the fabrication process for this…

QUESTION: what difficulty will you experience if you do genetic manipulation to streptomyces spp. and how can this difficulty overcome ?? how could you modulate the gene expression for improving the productivity of an antibiotic produced by the streptomyces strain ? discuss with diagram

Answer 2

Question

Chapter 19.5, Problem 2EQ

Summary Introduction

To determine: The reason for no growth of the unmixed bacterial strains in the Lederberg and Tatum experiment.

Introduction: The experiment performed by Lederberg and Tatum was conducted to understand the mechanism of transformation in bacteria. The experiment was later continued by Davis to finally prove that direct contact is pre-requisite for conjugation to occur.

Summary Introduction

To determine: The significance of the mixed strains on the culture plate.

Introduction: The mixing of the strains met– bio– thr+ pro+ and met+ bio+ thr– pro– did not produce colonies due to lack of the mechanisms to synthesize the required amino acids. However, the mixing of the strains lead to production of new strain, which was capable of growing on the culture media

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 19.5, Problem 2EQ

Summary Introduction

To determine: The reason for no growth of the unmixed bacterial strains in the Lederberg and Tatum experiment.

Introduction: The experiment performed by Lederberg and Tatum was conducted to understand the mechanism of transformation in bacteria. The experiment was later continued by Davis to finally prove that direct contact is pre-requisite for conjugation to occur.

Summary Introduction

To determine: The significance of the mixed strains on the culture plate.

Introduction: The mixing of the strains met– bio– thr+ pro+ and met+ bio+ thr– pro– did not produce colonies due to lack of the mechanisms to synthesize the required amino acids. However, the mixing of the strains lead to production of new strain, which was capable of growing on the culture media

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 19.5, Problem 2EQ

Summary Introduction

To determine: The reason for no growth of the unmixed bacterial strains in the Lederberg and Tatum experiment.

Introduction: The experiment performed by Lederberg and Tatum was conducted to understand the mechanism of transformation in bacteria. The experiment was later continued by Davis to finally prove that direct contact is pre-requisite for conjugation to occur.

Summary Introduction

To determine: The significance of the mixed strains on the culture plate.

Introduction: The mixing of the strains met– bio– thr+ pro+ and met+ bio+ thr– pro– did not produce colonies due to lack of the mechanisms to synthesize the required amino acids. However, the mixing of the strains lead to production of new strain, which was capable of growing on the culture media

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 19.5, Problem 2EQ

Summary Introduction

To determine: The reason for no growth of the unmixed bacterial strains in the Lederberg and Tatum experiment.

Introduction: The experiment performed by Lederberg and Tatum was conducted to understand the mechanism of transformation in bacteria. The experiment was later continued by Davis to finally prove that direct contact is pre-requisite for conjugation to occur.

Summary Introduction

To determine: The significance of the mixed strains on the culture plate.

Introduction: The mixing of the strains met– bio– thr+ pro+ and met+ bio+ thr– pro– did not produce colonies due to lack of the mechanisms to synthesize the required amino acids. However, the mixing of the strains lead to production of new strain, which was capable of growing on the culture media

Answer 6

Chapter 19.5, Problem 2EQ

Summary Introduction

To determine: The reason for no growth of the unmixed bacterial strains in the Lederberg and Tatum experiment.

Introduction: The experiment performed by Lederberg and Tatum was conducted to understand the mechanism of transformation in bacteria. The experiment was later continued by Davis to finally prove that direct contact is pre-requisite for conjugation to occur.

Answer 7

Chapter 19.5, Problem 2EQ

Summary Introduction

To determine: The reason for no growth of the unmixed bacterial strains in the Lederberg and Tatum experiment.

Introduction: The experiment performed by Lederberg and Tatum was conducted to understand the mechanism of transformation in bacteria. The experiment was later continued by Davis to finally prove that direct contact is pre-requisite for conjugation to occur.

Answer 8

Summary Introduction

To determine: The significance of the mixed strains on the culture plate.

Introduction: The mixing of the strains met– bio– thr+ pro+ and met+ bio+ thr– pro– did not produce colonies due to lack of the mechanisms to synthesize the required amino acids. However, the mixing of the strains lead to production of new strain, which was capable of growing on the culture media

Answer 9

Summary Introduction

To determine: The significance of the mixed strains on the culture plate.

Introduction: The mixing of the strains met– bio– thr+ pro+ and met+ bio+ thr– pro– did not produce colonies due to lack of the mechanisms to synthesize the required amino acids. However, the mixing of the strains lead to production of new strain, which was capable of growing on the culture media

Answer 10

Expert Solution & Answer

Answer 11

Expert Solution & Answer

Answer 12

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 13

Ch. 19.1 - Prob. 1CS Ch. 19.2 - Prob. 1CS Ch. 19.2 - Viral Reproductive Cycles Concept Check: From the...Ch. 19.4 - Genetic Properties of Bacteria Core Skill:...Ch. 19.4 - Prob. 1CC Ch. 19.4 - Genetic Properties of Bacteria Concept Check:...Ch. 19.4 - Prob. 3CC Ch. 19.5 - Prob. 1CC Ch. 19.5 - Prob. 1EQ Ch. 19.5 - Prob. 2EQ

Solution Summary: The author explains Lederberg and Tatum's experiment to understand the mechanism of transformation in bacteria, and Davis' experiments to prove that direct contact is pre-requisite for conjugation.

Concept explainers

Videos

Want to see the full answer?

Chapter 19 Solutions