In a famous experiment, matthew meselson and franklin stahl grew e. coli cells in a medium containing only the "heavy" isotope of nitrogen, n15 . these cells were then transferred to a medium with the "light" isotope of nitrogen, n14 . the results of the experiment supported the hypothesis of semiconservative replication, which was proposed by watson and crick. heavy dna ( n15 dna), hybrid dna, and light dna ( n14 dna) can be separated by centrifugation. if cells containing n15 dna are transferred to a medium with only n14 nh4cl as a nitrogen source, what percent of daughter molecules are composed of hybrid dna after 3 generations?
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Chemistry, 21.06.2019 22:30
Which of these sequences lists the correct order for the creation of sedimentary rock from sediment? a. deposition, burial, compaction, cementation b. burial, deposition, compaction, cementation c. compaction, deposition, burial, cementation d. cementation, deposition, burial, compaction
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Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.
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In a famous experiment, matthew meselson and franklin stahl grew e. coli cells in a medium containin...
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