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4 questions · 2011 · answers as per the UPSC key

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UPSC 2011 · Q5 · Science & Technology › Biotechnology & Genetics · Save

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?

(a) 1 and 2 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2 and 3
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Answer: (c) 1 and 3 only
UPSC 2011 · Q29 · Science & Technology › Biotechnology & Genetics · Save

A genetically engineered form of brinjal, known as the Bt-brinjal, has been developed. The objective of this is

(a) To make it pest-resistant
(b) To improve its taste and nutritive qualities
(c) To make it drought-resistant
(d) To make its shelf-life longer
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Answer: (a) To make it pest-resistant
UPSC 2011 · Q65 · Science & Technology › Biotechnology & Genetics · Save

Recently, ‘oilzapper’ was in the news. What is it?

(a) It is an eco-friendly technology for the remediation of oily sludge and oil spills
(b) It is the latest technology developed for under sea oil exploration
(c) It is a genetically engineered high biofuel yielding maize variety
(d) It is the latest technology to control the accidentally caused fires in oil wells
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Answer: (a) It is an eco-friendly technology for the remediation of oily sludge and oil spills
UPSC 2011 · Q66 · Science & Technology › Biotechnology & Genetics · Save

A married couple adopted a male child. A few years later twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is

(a) O positive
(b) A positive
(c) B positive
(d) Cannot be determined on the basis of the given data
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Answer: (a) O positive