{"id":901,"date":"2024-03-05T15:07:25","date_gmt":"2024-03-05T15:07:25","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=901"},"modified":"2024-03-05T15:07:25","modified_gmt":"2024-03-05T15:07:25","slug":"who-had-proposed-for-the-first-time-the-double-helix-model-of-dna","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/who-had-proposed-for-the-first-time-the-double-helix-model-of-dna\/","title":{"rendered":"Who had proposed for the first time the double helix model of DNA ?"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a97d850e13bd\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    Watson and Crick                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Fisher and Haldoni                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Lamurk and Darwin                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    HugodeVries                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is (a) Watson and Crick.<\/p>\n<p>James Watson and Francis Crick were two British scientists who proposed the double helix model of DNA in 1953. Their model was based on X-ray crystallography data that had been collected by Rosalind Franklin and Maurice Wilkins. The double helix model is a three-dimensional structure of DNA that consists of two strands of nucleotides <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> that are twisted around each other. The nucleotides are arranged in pairs, with adenine always pairing with thymine and guanine always pairing with cytosine. The double helix model is a fundamental concept in molecular biology and has been used to explain many aspects of DNA replication, transcription, and translation.<\/p>\n<p>Fisher and Haldoni were two scientists who proposed a model of DNA in 1952. However, their model was incorrect and was not widely accepted. Lamarck and Darwin were two scientists who proposed theories of evolution in the 1800s. However, their theories did not address the structure of DNA. Hugo de Vries <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> was a Dutch botanist who proposed the mutation theory of evolution in the early 1900s. However, his theory did not address the structure of DNA.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Who had proposed for the first time the double helix model of DNA ?<\/title>\n<meta name=\"description\" content=\"James Watson and Francis Crick were two British scientists who proposed the double helix model of DNA in 1953. Their model was based on X-ray crystallography data that had been collected by Rosalind Franklin and Maurice Wilkins. The double helix model is a three-dimensional structure of DNA that consists of two strands of nucleotides that are twisted around each other. The nucleotides are arranged in pairs, with adenine always pairing with thymine and guanine always pairing with cytosine. The double helix model is a fundamental concept in molecular biology and has been used to explain many aspects of DNA replication, transcription, and translation.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/who-had-proposed-for-the-first-time-the-double-helix-model-of-dna\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Who had proposed for the first time the double helix model of DNA ?\" \/>\n<meta property=\"og:description\" content=\"James Watson and Francis Crick were two British scientists who proposed the double helix model of DNA in 1953. Their model was based on X-ray crystallography data that had been collected by Rosalind Franklin and Maurice Wilkins. The double helix model is a three-dimensional structure of DNA that consists of two strands of nucleotides that are twisted around each other. The nucleotides are arranged in pairs, with adenine always pairing with thymine and guanine always pairing with cytosine. The double helix model is a fundamental concept in molecular biology and has been used to explain many aspects of DNA replication, transcription, and translation.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/who-had-proposed-for-the-first-time-the-double-helix-model-of-dna\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-05T15:07:25+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Who had proposed for the first time the double helix model of DNA ?","description":"James Watson and Francis Crick were two British scientists who proposed the double helix model of DNA in 1953. Their model was based on X-ray crystallography data that had been collected by Rosalind Franklin and Maurice Wilkins. The double helix model is a three-dimensional structure of DNA that consists of two strands of nucleotides that are twisted around each other. The nucleotides are arranged in pairs, with adenine always pairing with thymine and guanine always pairing with cytosine. The double helix model is a fundamental concept in molecular biology and has been used to explain many aspects of DNA replication, transcription, and translation.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/who-had-proposed-for-the-first-time-the-double-helix-model-of-dna\/","og_locale":"en_US","og_type":"article","og_title":"Who had proposed for the first time the double helix model of DNA ?","og_description":"James Watson and Francis Crick were two British scientists who proposed the double helix model of DNA in 1953. Their model was based on X-ray crystallography data that had been collected by Rosalind Franklin and Maurice Wilkins. The double helix model is a three-dimensional structure of DNA that consists of two strands of nucleotides that are twisted around each other. The nucleotides are arranged in pairs, with adenine always pairing with thymine and guanine always pairing with cytosine. The double helix model is a fundamental concept in molecular biology and has been used to explain many aspects of DNA replication, transcription, and translation.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/who-had-proposed-for-the-first-time-the-double-helix-model-of-dna\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-03-05T15:07:25+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/who-had-proposed-for-the-first-time-the-double-helix-model-of-dna\/","url":"https:\/\/exam.pscnotes.com\/mcq\/who-had-proposed-for-the-first-time-the-double-helix-model-of-dna\/","name":"Who had proposed for the first time the double helix model of DNA ?","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-03-05T15:07:25+00:00","dateModified":"2024-03-05T15:07:25+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"James Watson and Francis Crick were two British scientists who proposed the double helix model of DNA in 1953. Their model was based on X-ray crystallography data that had been collected by Rosalind Franklin and Maurice Wilkins. The double helix model is a three-dimensional structure of DNA that consists of two strands of nucleotides that are twisted around each other. The nucleotides are arranged in pairs, with adenine always pairing with thymine and guanine always pairing with cytosine. The double helix model is a fundamental concept in molecular biology and has been used to explain many aspects of DNA replication, transcription, and translation.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/who-had-proposed-for-the-first-time-the-double-helix-model-of-dna\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/who-had-proposed-for-the-first-time-the-double-helix-model-of-dna\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/who-had-proposed-for-the-first-time-the-double-helix-model-of-dna\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"mcq","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/"},{"@type":"ListItem","position":3,"name":"biology","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/biology\/"},{"@type":"ListItem","position":4,"name":"Who had proposed for the first time the double helix model of DNA ?"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/d97f17072bfa490596c8f78363955d55?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d97f17072bfa490596c8f78363955d55?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/901"}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=901"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/901\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=901"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=901"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}