QUESTION-WISE · PRELIMS 2011 · Q803

Science & Technology · Prelims 2011 Q803

At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us? 1. It is possible to know…

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Genomics & Bioengineering Genomics Answer C

The question

Stem and options.

At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us?

1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease-resistant animal breeds.

Which of the statements given above is/are correct?

1 and 2 only

2 only

1 and 3 only

1, 2 and 3

Source: UPSC Civil Services Preliminary Examination 2011. Syllabus tags and explanation are GyanGram editorial joins for learning—not official UPSC metadata.

Answer

Correct option C

• Correct Answer: C
• Gene mapping enables precise livestock pedigrees via genetic markers and marker-assisted selection for disease-resistant breeds.
• Statement 2 is incorrect: not all human diseases are genetically determined; many involve environmental and multifactorial causes.

Syllabus path

Where this sits in Learn.

Subject

Science & Technology

SNT

Unit

Genomics & Bioengineering

SNT-U08

Chapter

Genomics

SNT-U08-C01

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