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Question
50 heavy DNA (N1) molecules are repe
caled 2 times in Ni medium, what is ob.
tained ?
(11 100 half heavy and half light and 100
light DNA molecules
12 100 heavy and 100 light DNA molecules
73) 50 heavy and 150 light DNA molecules
14) none of the above
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Q1
Assuming that 50 heavy DNA molecules replicated twice in a medium containg N^{14 }we expect 1) 100 half heavy and half light and 150 light DNA molecules 2) 100 half heavy and half light and 100 light DNA mlecules 3) 50 heavy and 150 light DNA molecules 4) 50 heavy and 100 light DNA molecules
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Q2
pl explain 18.
Q.18. If 50 heavy DNA () are replicated 2 times in medium, what is obtained?
a) 100 half heavy and half light and 100 light
b) 100 heavy and half light and 100 light
c) 50 heavy and 50 light
d) 200 heavy DNA
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Q3
2. How did the scientists make it possible to distinguish the heavy DNA molecule from the light DNA molecule? Explain.
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A heavy DNA (15N−15N) E.coli is allowed to replicate in (14N) medium for 60 minutes. What would be the proportion of light (14N−14N) and hybrid density of DNA (14N−15N) molecules?
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Q5
Assuming that 50 heavy DNA molecules replicated twice in a medium containing N14, WE EXPECT