Which of the following statements are correct ?
(i) Restriction enzymes cut the strand of DNA a little away from the centre of the palindrome site, but between the same two bases on the opposite strands.
(ii) Hind ll always cuts DNA molecules at a particular point by reconginisng a specific sequence of six base pairs.
(iii) Separated DNA fragments cannot be visualised without staining on an agarose gel electrophoresis.
(iv) 'Ori' is the sequence responsible for controlling the copy number.
(v) DNA is a positively charged molecule.

Options

A. (i), (iii) and (v)
B. (i), (ii),(iii) and (iv)
C. (iii),(iv) and (v)
D. (i),(ii),(iii),(iv) and (v)

Answer

B

Explanation

DNA is a negatively charged molecule.