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

examrobotsa's picture

Submitted by examrobotsa on

Q: 99 (IAS/2022)
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 ?

question_subject: 

Science

question_exam: 

IAS

stats: 

0,89,66,9,11,46,89

keywords: 

{'dna barcoding': [0, 0, 0, 1], 'species': [0, 0, 0, 2], 'undesirable animal': [0, 0, 0, 1]}
The correct answer is 2 and 3 only. DNA barcoding is a technique that involves sequencing a short section of DNA from a standardized region of the genome and using it to identify and distinguish between different species. It is used to identify species that are difficult to distinguish based on physical characteristics alone. Therefore, statement 2 is correct. DNA barcoding can also be used to identify the presence of unwanted animal or plant material in processed foods, which makes statement 3 correct. However, it cannot be used to assess the age of a plant or animal, making statement 1 incorrect.

 

Preparing for Future Exams: Learning from the Analysis of Past Questions

Topics:

  1. DNA Barcoding
  2. Biodiversity
  3. Food Safety

Sources:

  1. NCERT textbooks on Biology (Class 12th)
  2. "DNA Barcoding in Plants: Methods and Protocols" by Melanie L. Hartman
  3. "DNA Barcoding: Methods and Protocols" by Stefano Mariani and Simon Creer

Related Concepts:

  1. Molecular Markers
  2. Taxonomy and Systematics
  3. Polymerase Chain Reaction (PCR)
  4. Phylogenetic Analysis

Related Topics:

  1. Biodiversity Conservation
  2. Biotechnology and its Applications
  3. Food Adulteration and its Effects on Human Health
  4. Consumer Awareness and Protection

NCERT Chapters:

  1. Class 12th Biology, Chapter 7: Evolution
  2. Class 12th Biology, Chapter 15: Biodiversity and Conservation