{"id":85463,"date":"2025-06-01T03:18:13","date_gmt":"2025-06-01T03:18:13","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=85463"},"modified":"2025-06-01T03:18:13","modified_gmt":"2025-06-01T03:18:13","slug":"photo-51-refers-to-an-image-of","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/photo-51-refers-to-an-image-of\/","title":{"rendered":"Photo 51 refers to an image of"},"content":{"rendered":"

Photo 51 refers to an image of<\/p>\n

[amp_mcq option1=”a crater on the Moon” option2=”DNA molecules” option3=”the virus responsible for COVID-19″ option4=”the virus responsible for common cold” correct=”option2″]<\/p>\n

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\n
This question was previously asked in<\/div>\n
UPSC CDS-1 – 2024<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nPhoto 51 refers to a famous X-ray diffraction image of DNA molecules.
\n<\/section>\n
\nPhoto 51 was an X-ray diffraction pattern of DNA, obtained by Rosalind Franklin and Raymond Gosling in 1952 at King’s College London. This image was crucial in determining the double helix structure of DNA by James Watson and Francis Crick.
\n<\/section>\n
\nThe clarity of Photo 51 provided key information, including the helical nature of DNA, its diameter, and the spacing between the base pairs, which were essential clues for building the correct molecular model.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Photo 51 refers to an image of [amp_mcq option1=”a crater on the Moon” option2=”DNA molecules” option3=”the virus responsible for COVID-19″ option4=”the virus responsible for common cold” correct=”option2″] This question was previously asked in UPSC CDS-1 – 2024 Download PDFAttempt Online Photo 51 refers to a famous X-ray diffraction image of DNA molecules. Photo 51 was … <\/p>\n

Detailed SolutionPhoto 51 refers to an image of<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1087],"tags":[1103,1117,1199],"class_list":["post-85463","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1103","tag-biology","tag-heredity","no-featured-image-padding"],"yoast_head":"\nPhoto 51 refers to an image of<\/title>\n<meta name=\"description\" content=\"Photo 51 refers to a famous X-ray diffraction image of DNA molecules. Photo 51 was an X-ray diffraction pattern of DNA, obtained by Rosalind Franklin and Raymond Gosling in 1952 at King's College London. 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