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The first pharmaceutical product commercially manufactured using recombinant DNA technology, by Eli Lilly in 1979, was:
AHuman growth hormone
BHepatitis B vaccine
CTissue plasminogen activator
DHuman insulin
Answer & Solution
Correct answer: D. Human insulin
1. Several proteins such as insulin, growth hormone and vaccines are made by rDNA technique.
2. The text states Eli Lilly first started commercial production of human insulin using rDNA technology in 1979.
3. The other products were also developed by rDNA but are not named as the first commercial one, so A, B and C are traps.
4. Hence the answer is D.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Breeding and Biotechnology", p.300_
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