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NEET-XII-Biology

Previous Year Paper year:2017

with Solutions -
Qstn# 55 Prvs-QstnNext-Qstn
  • #55
    DNA fragments are
    (1) Either positively or negatively charged depending on their size
    (2) Positively charged
    (3) Negatively charged
    (4) Neutral
    digAnsr:   3
    Ans : (3)
    Sol. DNA fragments are negatively charged due to phosphate (H3PO4-) backbone