LIFE:SCIENCE OF BIOL.(LL) >CUSTOM<
11th Edition
ISBN: 9781319209957
Author: Sadava
Publisher: MAC HIGHER
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Chapter 13.1, Problem 3R
Summary Introduction
To review:
The attributes of T2 bacteriophage in experiments conducted by Hershey and Chase that depicted DNA (deoxyribonucleic acid) to be the genetic material and not the proteins.
Introduction:
After the experiments done by Avery along with other scientists, there still were apprehensions about DNA being the genetic material and therefore in 1952, there were experiments that were carried out by two scientists Martha Chase and Alfred Hershey to prove the same.
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Did Hershey and Chase overcome objections to Avery et al.’s claim that DNA, not protein, was the genetic material? How was the choice of a bacteriophage by Hershey and Chase a way to avoid problems with earlier bacterial transformation experiments?
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Hershey and Chase used radioactive components to tag protein and DNA before
infecting bacteriophage. What was the most important concept demonstrated by
Hershey-Chase experiments? Explain the experiment in detail.
Chapter 13 Solutions
LIFE:SCIENCE OF BIOL.(LL) >CUSTOM<
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- Answer the following questions: 1. Which sequence has a purine base at the 3' end? A) TCTAG B) AUCCT C) GUGCCU D) CCTTC 2. Select a choice that does not describe a lagging strand: A) Has a polynucleotide product in a 5' to 3' direction B) Being produced away from the replication fork C) Complementary strand based on a template strand in 5' and 3' direction D) Composed of multiple RNA primers 3. Which of the following is not observed during elongation process in DNA replication? A) Helicase B) DNA Pol C) Primase D) Okazaki fragmentsarrow_forwardNitrogen and carbon are more abundant in proteinsthan sulfur. Why did Hershey and Chase use radioactive sulfur instead of nitrogen and carbon to label theprotein portion of their bacteriophages in their experiments to determine whether parental protein or parental DNA is necessary for progeny phage production?arrow_forwardA particular variant of the lambda bacteriophage has a DNA double-stranded genome of 51,365 base pairs. How long would this DNA be?arrow_forward
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