Molecular Basis Of Inheritance Ques 59

59. Experimental material in the study of DNA replication has been

(a) Escherichia coli

(b) Neurospora crassa

(c) Pnеитососсиs

(d) Drosophila melanogaster

Show Answer

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.

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