Question : Match List-I with List-II and give the correct answer from the code given below:
| List-I (Discoverer) | List II (Discoveries) |
| p. Jenner | 1. blood grouping |
| q. Watson | 2. Penicillin |
| r. Landsteiner | 3 vaccination |
| s. Flemming | 4. double helix |
Option 1: p - 3, q - 1, r - 2, s - 4
Option 2: p - 3, q - 4, r - 2, s - 1
Option 3: p - 3, q - 4, r - 1, s - 2
Option 4: p - 3, q - 2, r - 4, s - 1
Correct Answer: p - 3, q - 4, r - 1, s - 2
Solution : The correct option is p - 3, q - 4, r - 1, s - 2
In the late 18th century,
Edward Jenner
developed vaccination. He is credited with creating the
smallpox vaccine
, which was a turning point in immunisation and disease prevention. In 1953,
James Watson and Francis Crick
discovered the
double helix structure of DNA
while working together. Their groundbreaking findings revealed the basic structure of genetic material. With his pioneering research into the categorization of blood types,
Karl Landsteiner
developed
blood grouping
in the early twentieth century. His work helped to provide the groundwork for contemporary blood transfusion practises. In 1928,
Alexander Fleming
developed penicillin. His unintentional discovery of the
antibiotic penicillin
transformed medicine by introducing the first widely used antibiotic, greatly enhancing the treatment of bacterial diseases.
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