Rakibul Islam

Have interest on Diplomacy, Foreign Policy, Politics and History

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⚓️ Saint Martin's Island 🇧🇩

Photographed by Rakibul Islam

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দারুচিনি দ্বীপ ভ্রমণ (২০২৪)

⚓️ Saint Martin's Island 🇧🇩

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signing off!

10.12.2024 (Tuesday)

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dreaming of better days. #feelYoung

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This picture was taken in last winter beside the canal 'Ichakhali' located inside the National Special Economic Zone, Mirsharai, Chattogram.

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Special post for reaching 1000 followers on instagram! 

While Darwin is often credited as the father of the Theory of Evolution, it’d be more precise to say that he was the father of the Theory of Evolution “by Natural Selection”. 

Darwin’s genius was not in realizing that animals change over time, but in identifying the mechanisms by which these changes occur. 

The idea that animals evolve over generations was proposed by a number of scientists and philosophers in various forms. And today, we will look at Al Jahiz, who proposed the idea some 1000 years before our English naturalist.

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The unsung heroine of DNA.

Franklin is best known for her work on the X-ray diffraction images of DNA, particularly Photo 51, while at King's College London, which led to the discovery of the DNA double helix for which James Watson, Francis Crick and Maurice Wilkins shared the Nobel Prize in Physiology or Medicine in 1962. The Nobel committee does not give posthumous prizes.

Rosalind Franklin was in the Biophysical laboratory at King’s College London from 1951. There she conducted work on DNA using X-Ray diffraction to study the structure and chemical make-up of DNA, at the time unknown to science (or anyone for that matter). X-Ray diffraction bounces X-rays off a crystallised object and observes how they scatter, this scattering or diffraction giving information on the structure of the object being analysed. Franklin took images of DNA via this method including the famous ‘Image 51’, later used by Watson and Crick to support their findings of DNA’s double helix in 1953. But the use of Image 51 by Watson and Crick was not known to Franklin as her data was not yet published. Her photographs were given to Watson and Crick by their friend, Maurice Wilkins, who worked in the same laboratory as Franklin but was known to clash with her. Wilkins’ effort to show Watson and Crick image 51 may not have been intended as spiteful, but it resulted directly in a lack of recognition for Rosalind Franklin’s role in the discovery of the DNA double helix. Despite Franklin’s work being considered crucial by Watson, she was not jointly awarded the Nobel Prize with them, that privilege instead going to Wilkins. Supposedly she could not be recognised for her contribution as by the time the award was received in 1962 she had sadly passed away with ovarian cancer at just 37.

— J. D. Bernal, 1958. Franklin's X-ray diagram of the B form of sodium thymonucleate (DNA) fibres, published in Nature on 25 April 1953, shows “in striking manner the features characteristic of helical structures”

- Rosalind Franklin (1920-1958)

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The UK Royal Mint has released this 50-pence coin in honour of the hundredth anniversary of biophysicist Rosalind Franklin’s birth on 25 July. It features a stylized version of her X-ray crystallography image of DNA, which contributed to the discovery of the molecule’s double-helix structure.

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This depiction of SARS-CoV-2 using a spike protein to attach to an ACE2 receptor is from neuroscientist Ben Martynoga and artist Moose Allain’s new book, The Virus.