Which one of the following is the correct chronology of invention/ dis

Which one of the following is the correct chronology of invention/ discovery in the field of Bio-technology ?

Discovery of Plasmid, Double Helical structure of DNA, DNA fingerprinting, cloning of Dolly
Double Helical structure of DNA, Discovery of Plasmid, DNA fingerprinting, cloning of Dolly
DNA fingerprinting, cloning of Dolly, Double Helical structure of DNA, Discovery of Plasmid
Double Helical structure of DNA, DNA fingerprinting, Discovery of Plasmid, cloning of Dolly
This question was previously asked in
UPSC CAPF – 2024
The correct option is A. The correct chronological order of the listed events in the field of biotechnology is: Discovery of Plasmid, Double Helical structure of DNA, DNA fingerprinting, cloning of Dolly.
– Discovery of Plasmid: Although observed earlier, the term “plasmid” was coined by Joshua Lederberg in 1952.
– Double Helical structure of DNA: Watson and Crick published their model of the DNA double helix in 1953.
– DNA fingerprinting: Developed by Sir Alec Jeffreys in 1984.
– Cloning of Dolly: Dolly the sheep was born in July 1996, and her birth was announced in 1997.
This sequence reflects the foundational molecular biology discoveries in the 1950s paving the way for later applied technologies like DNA fingerprinting and cloning in the 1980s and 1990s.