Consider the following statements:

DNA Barcoding can be a tool to:

  1. assess the age of a plant or animal.
  2. distinguish among species that look alike.
  3. identify undesirable animal or plant materials in processed foods.

Which of the statements given above is/are correct?

[UPSC Civil Services Exam – 2022 Prelims]

(a) 1 only

(b) 3 only

(c) 1 and 2

(d) 2 and 3


Answer: (d)

Explanation:

DNA barcoding is a technique that enables the quick and precise identification of species by analyzing a short, standardized segment of gene regions and comparing individual sequences to a reference database.

The applications of DNA barcoding encompass a range of uses, such as

  • identifying new species,
  • assessing food safety,
  • detecting invasive species,
  • evaluating cryptic species,
  • pinpointing endangered and threatened species,
  • connecting the early stages of an organism’s life cycle to the adult species,
  • safeguarding intellectual property rights for bioresources,
  • devising global conservation strategies,
  • identifying plant leaves when flowers or fruits are not available, and
  • recognizing pollen collected by pollinators.

Consider the following statements:                                                                   The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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Consider the following statements:                                                         The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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