Molecular Basis of Inheritance Question 113
113. Experimental material in the study of DNA replication has been
(a) Escherichia coli
(b) Neurospora crassa
(c) Pnеитососсиs
(d) Drosophila melanogaster
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Answer : a
Hints & Solution
(a) Meselson and Stahl (1958) raised Escherichia coli on ammonium chloride having heavy isotope of nitrogen for several generations to study semi-conservative replication of DNA.
