Biology, 27.11.2019 04:31 CassidgTab
Afamous experiment, matthew meselson and franklin stahl grew e. coli cells in a medium containing only the "heavy" isotope or 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 semi conservative 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 ^14n nh_4ci as a nitrogen source, what percent of daughter molecules are composed of hybrid dna after 3 generations? predict what percent of daughter molecules would be composed of hybrid dna if dna exhibited conservative replication -that is, if a daughter dna molecule were composed of newly synthesized dna only.
Answers: 3
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In pea plants, the allele for inflated pod seed, i, is dominant over the allele for constricted pod seed, i. the punnett square shows a cross for this trait. which offspring will be homozygous dominant
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Immature bone cells, or osteoblasts, manufacture a protein called osteoid as well as several hormones. because of this, we would expect osteoblasts to contain numerous a) nuclei. b) ribosomes. c) lysosomes. d) golgi bodies.
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Afamous experiment, matthew meselson and franklin stahl grew e. coli cells in a medium containing on...
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