Biology, 03.12.2019 04:31, RainaJade6004
Meselson and stahl grew cells in media that contained different isotopes of nitrogen (15n or 14n) so that the dna molecules produced from these different isotopes could be distinguished by mass. a) explain what type of equipment was used to separate ""light"" dna from ""heavy"" dna in the meselson and stahl experiments. b) briefly describe the three existing models for dna replication when these studies were begun. c) explain how one of the three then existing models for dna replication was ruled out definitively by the experiment you described for part a). d) what experimental result eliminated the dispersive model of dna replication?
Answers: 3
Biology, 22.06.2019 10:30, ccarwile01
Apopulation of rabbits live in a local forest. some had a mutation for a large body and long legs. the graph below shows the number of both the mutant and the normal rabbits over 5 generations. which of the following statements is true for this scenario? question 7 options: the rabbits with the mutation were more successful with restricted food than the normal rabbits. both sets of rabbits were equally successful with the restricted food source. i the normal rabbits were more successful with restricted food than the rabbits with the mutation. the graph does not let us know which rabbit was more successful.
Answers: 1
Meselson and stahl grew cells in media that contained different isotopes of nitrogen (15n or 14n) so...
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