UPSC CSE Prelims
Question 98
With reference to the recent developments in science, which one of the following statements is not correct?
View correct answer and explanation
Correct answer: A
Correct Option: A
Explanation:
Artificial DNA fragments can be synthesised, DNA can be copied outside cells using PCR, and cells can divide in tissue culture. Joining DNA from unrelated species is possible, but does not by itself yield a functional chromosome; the statement is too broad.
Option-wise Analysis:
A (Correct): Correct choice for “not correct”-joining arbitrary interspecies DNA segments is not enough to make functioning chromosomes.
B (Incorrect): Synthetic biologists can manufacture functional DNA segments in laboratories.
C (Incorrect): PCR and related techniques amplify DNA without keeping the donor animal cell alive.
D (Incorrect): Plant and animal cells can be propagated and divided under suitable culture conditions.
Review Note:
This distinction does not deny research on synthetic chromosomes; it rejects the absolute formulation of option A.