Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 23, Problem 2DAA
Summary Introduction

To determine: The percentage of deaths caused by A. ostoyae in the most affected species in both control and experimental forests.

Introduction: Parasitic fungi attack plants and withdraw nutrients from them. Armillaria ostoyae (honey mushroom) is an example of fungal parasite. They attack the root systems of living trees. When the tree dies, the fungal parasite survives on the dead remains. The hyphae that grow from roots of infected trees and dead stumps invade roots of healthy plants leading to infection.

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1)Which plate did you see purple/pink/blue bacterial cells? Why did you see this growth? Explain your answer in terms of transformation and plasmids?  2) Calculating Transformation Efficiency For the +DNA/+Amp/+IPTG plate, record the following:  Number of transformants (colonies): _________________ Nanograms of plasmid DNA added: 50 ng  Final recovery volume: 0.50 mL  Volume plated: 0.25 mL  Transformation efficiency equation: Transformation efficiency = Number of transformants / µg of DNA x Final volume at recovery (mL)/ volume plated (mL) 3) Using the equation above, calculate the transformation efficiency. 4) Describe the success of the transformation efficiency of this demo based on the calculation you did above?
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