Question

A linear DNA fragment is (100%) labelled at one end and
has 3 restriction sites for Eco RI. If it is partially digested by
Eco RI so that all possible fragments are produced, how
many of these fragments will be labelled and how many
will not be labelled?
(a) 4 labelled, 6 unlabelled
(b) 4 labelled, 4 unlabelled
(c) 3 labelled, 5 unlabelled
(d) 3 labelled, 3 unlabelled​

Answer 1

Answer:

I think (2) is the answer

Answer 2

Answer:

Let the DNA be the above line :

The cut portions are E.CoRI digestion site. So the partial digestion can generate 3 smaller fragments with label and 5 fragments without any level.

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