Applications of DNA Barcoding
Question
Consider the following statements: DNA Barcoding can be a tool to: Which of the statements given above is/are correct?
- 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.
Options
1 only
3 only
1 and 2
2 and 3
Explanation
Statements 2 and 3 are correct. DNA barcoding uses short genetic sequences from a standard genome part to universally identify a species, making it perfect for distinguishing look-alike species and exposing fraudulent/undesirable ingredients in processed foods. Statement 1 is incorrect; DNA identifies what species an organism is, but it cannot determine the chronological age of the specific individual animal or plant.
Answer: (d).
Question details
Year
2022
Paper
GS Paper 1
Question
Q99
Subject
Science & Technology
Sub-topic
Biotechnology & Genetics
Type
Statement-based
Difficulty
Medium
Nature
Static
Source hint
Mitochondrial DNA Barcoding / Molecular Species Identification Tech
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