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SERENDIPIDITY -
Sometimes discoveries are made unexpectedly matter of chance. This is serendipidity. Examples -
1. Structural formula of benzene - It was dreamt by Kekule. He got the idea of this ring like structure after seeing a snake licking its tail forming a ring like shape.
2. Principle of floatation - Discovered by Archimedes.
3. Law of graitation - Newton saw an apple falling on ground & got idea of law of gravitation.
4. Discovery of Pencillin - Alexander Flemming (1928) discovered antibiotic penicillin from Penicillium notatum.
5. Steam engine - James watt got the idea of utilising steam energy.
6. Anaphylaxin - Charls Ricket discovered it or allergic reactions by chance through second injection of poison into doges who had survived the first one.
7. Mutation - Sudden appearance of ancon sheep which had extremely small legs in a herd of normal sheep led to the discovery of mutation.
The human blood group, related to the MN system is controlled by two alleles, S and s. Three distinct phenotypes can be identified by mean of biochemical tests. Among 1000 Britishe
A mother has brought her 2-week-old infant to the emergency department due to the baby's persistent and increasing jaundice. Blood testing reveals that the infant's unconjugated bi
Molecular Hydrogen N 2 -fixing organisms also produce a membrane bound enzyme called uptake-hydrogenase under N 2 -fixing condition. The physiological significance of the pres
explain the genotypes for each blood type and how this is an example of codominance. Blood type- A, AB, B, 0
EXCRETIO N IN EARTHWORM - Main organs are nephredia, pharyngeal, integumentary & septed nephredia. Main are septal nephredia situated on septa.Nephrostome present. Body
What is heterospermy?also give its significance?
Q. Do bacteria cells have a nucleus? In bacteria the genetic material is dispersed in the cytosol and there is no inner membrane that delimits a nucleus.
Aortic Valve Repair : In, acquired AR associated with VSD and prolapse of a cusp, repair is often successful. VSD is closed and at the same time the prolapsed part o
Q. Etiologic factor of Congestive Cardiac Failure? Congestive heart failure develops over a period of time when the necrotic tissues are not replaced by functional connective c
Explain Cardiac disease Cardiac conduction abnormalities associated with Lyme disease are generally self-limited. Patients with minor cardiac involvement (first-degree atrioven
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