In their famous experiment, Matthew Meselson and Franklin Stahl grew E. coli cells in a medium containing only the "heavy" isotope of nitrogen, 15N. These cells were then transferred to a medium with the "light" isotope of nitrogen, 14N. The results of the experiment supported the hypothesis of semiconservative replication, which was proposed by Watson and Crick. Heavy DNA (15N DNA), hybrid DNA, and light DNA (14N DNA) can be separated by centrifugation. If cells containing 15N DNA are transferred to a medium with only 14NH4Cl as a nitrogen source, what percentage of daughter molecules are composed of hybrid DNA after 3 generations? daughter molecules composed of hybrid DNA: Predict what percentage of daughter molecules would be composed of hybrid DNA if DNA exhibited conservative replication (i.e., if a daughter DNA molecule were composed of only newly synthesized DNA). daughter molecules composed of hybrid DNA: % %

Human Heredity: Principles and Issues (MindTap Course List)
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Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna
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Problem 14QP: State the properties of the WatsonCrick model of DNA in the following categories: a. number of...
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In their famous experiment, Matthew Meselson and Franklin Stahl grew E. coli cells in a medium containing only the "heavy"
isotope of nitrogen, 15N. These cells were then transferred to a medium with the "light" isotope of nitrogen, 14N. The results of
the experiment supported the hypothesis of semiconservative replication, which was proposed by Watson and Crick.
Heavy DNA (15N DNA), hybrid DNA, and light DNA (14N DNA) can be separated by centrifugation. If cells containing 15N
DNA are transferred to a medium with only 14NH4Cl as a nitrogen source, what percentage of daughter molecules are
composed of hybrid DNA after 3 generations?
daughter molecules composed of hybrid DNA:
Predict what percentage of daughter molecules would be composed of hybrid DNA if DNA exhibited conservative replication
(i.e., if a daughter DNA molecule were composed of only newly synthesized DNA).
daughter molecules composed of hybrid DNA:
%
%
Transcribed Image Text:In their famous experiment, Matthew Meselson and Franklin Stahl grew E. coli cells in a medium containing only the "heavy" isotope of nitrogen, 15N. These cells were then transferred to a medium with the "light" isotope of nitrogen, 14N. The results of the experiment supported the hypothesis of semiconservative replication, which was proposed by Watson and Crick. Heavy DNA (15N DNA), hybrid DNA, and light DNA (14N DNA) can be separated by centrifugation. If cells containing 15N DNA are transferred to a medium with only 14NH4Cl as a nitrogen source, what percentage of daughter molecules are composed of hybrid DNA after 3 generations? daughter molecules composed of hybrid DNA: Predict what percentage of daughter molecules would be composed of hybrid DNA if DNA exhibited conservative replication (i.e., if a daughter DNA molecule were composed of only newly synthesized DNA). daughter molecules composed of hybrid DNA: % %
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