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

Hard

Science & Technology

Prelims 2022

Consider the following statements: DNA Barcoding can be a tool to:

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

Which of the statements given above is/are correct?

Select an option to attempt

Explanation

Statement 1 is incorrect. DNA Barcoding cannot assess the age DNA barcoding primarily focuses on identifying species based on their unique genetic sequences.

Statement 2 is correct. DNA barcoding is a valuable tool for distinguishing between species that appear similar morphologically. By analyzing short, standardized DNA sequences, scientists can efficiently and accurately identify different species, even if they look very alike.

Statement 3 is correct. DNA barcoding can be used to identify the origin and composition of food products. This can help detect cases where cheaper or undesirable ingredients (food adulteration) are substituted for the ones listed on the label. For example, it can be used to identify different types of meat in processed foods.

Therefore, statements 2 and 3 are correct.

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