Biology, 30.10.2019 07:31, diametriagay
Meselson and stahl cultured e. coli for several generations in a medium with a heavy isotope of nitrogen, 15n. they transferred the bacteria to a medium with a light isotope of nitrogen, 14 n. after two rounds of dna replication, half the dna molecules were light (both strands had 14n) and half were hybrids (15n-14n). what did the researchers conclude from these results?
Answers: 3
Biology, 22.06.2019 11:00, danielmartinez024m
1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis
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Biology, 22.06.2019 21:30, tatiana4ever
What do you think scientists face when classifying new organisms?
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Meselson and stahl cultured e. coli for several generations in a medium with a heavy isotope of nitr...
Mathematics, 25.01.2022 02:50
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