Here is Question No. 93 a part of our series on UPSC Prelims 2019
Q93. With reference to the recent developments in science which one of the following statements is not correct?
(a) Functional chromosomes can be created by joining segments of DNA taken from cells of different species.
(b) Pieces of artificial functional DNA can be created in laboratories.
(c) A piece of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratory.
(d) Cells taken out from plants and animals can be made to undergo cell division in laboratorypetri dishes.
Answer: A
- Option A is not correct: It is not possible to create a functional chromosome by joining segments of DNA taken from different species. Chromosomes are very long and code for so many genes. Within a species, translocation can take place and different parts of two chromosomes may join to produce functional chromosomes. But this often gives rise to abnormalities like Philadelphia Chromosome.
- Option B is correct: In a major step toward creating artificial life, US researchers have developed a living organism that incorporates both natural and artificial DNA and is capable of creating entirely new, synthetic proteins.
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