Q197 / 200 · NEET 2022 (Phase 2) · Zoology

Refer to the following statements for agarose-gel electrophoresis : (a) Agarose is a natural polymer obtained from sea-weed. (b) The separation of DNA molecules in agarosegel electrophoresis depends on the size of DNA. (c) The DNA migrates from negatively-charged electrode to the positively-charged electrode (d) The DNA migrates from positively-charged electrode to the negatively-charged electrode. Choose the most appropriate answer from the options given below :

  • A
    (a) and (b) only
  • Correct answer
    B
    (a), (b) and (c) only
  • C
    (a), (b) and (d) only
  • D
    (b), (c) and (d) only

Solution

Agarose gel electrophoresis is the process of separation of DNA fragments based on their size. As DNA is - vely charged, it moves from negative charged electrode to tve charged electrode inside the Gel Agarose gel shows sieving effect.

Hence, the correct answer is option: 'B'.

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