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Biology Molecular Basis of Inheritance Single Correct MCQ
Published on: August 20, 2026

Alfred Hershey and Martha Chase made a big contribution in proving DNA role as the hereditary molecule. The experiment is shown in the diagram. A and C are the presence or absence of radioactivity detected in cells B and D are the presence or absence of radioactivity detected in supernatants ceils, identify A, B, C and D –

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A
A - No Radioactivity ( 35 S) detected in cells; B - Radioactivity ( 32 P) detected in supernatant; C - Radioactivity ( 35 S) detected in cells; D - No Radiactivity in supernatant
B
A- Radioactivity (^S) detected in cells; B ~ No Radioactivity ( 35 S) detected in supernatant; C - Radioactivity ( 32 P) detected in cells; D - No Radiactivity in supernatant
C
A - No Radioactivity ( 35 S) detected in ceils; B - Radioactivity ( 35 S) detected in supernatant; C - Radioactivity ( 32 P) detected in cells; D - No Radiactivity in supernatant
D
A- No Radioactivity ( 35 S) detected in cells; B - Radioactivity ( 35 S) detected in supernatant; C - No Radioactivity ( 32 P) detected in cells; D - Radioactivity in supernatant

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