{"id":29293,"date":"2024-02-22T16:39:37","date_gmt":"2024-02-22T16:39:37","guid":{"rendered":"https:\/\/edukemy.com\/blog\/?p=29293"},"modified":"2024-02-22T16:39:39","modified_gmt":"2024-02-22T16:39:39","slug":"upsc-prelims-2022-question-99","status":"publish","type":"post","link":"https:\/\/edukemy.com\/blog\/upsc-prelims-2022-question-99\/","title":{"rendered":"UPSC Prelims 2022 &#8211; Question 99"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/edukemy.com\/upsc\/upsc-prelims-test-series?utm_source=Blog&amp;utm_medium=Blog&amp;utm_campaign=Blog-%20PTS\" target=\"_blank\" rel=\"noreferrer noopener\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/02\/Prelims-Test-Series-eng-and-hindi-1280\u00d7330.svg\" alt=\"UPSC Prelims Mock Test - ECONOMY 2\" class=\"wp-image-24924\" width=\"779\" height=\"199\"\/><\/a><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-6a609c4098f97\" class=\"ez-toc-cssicon-toggle-label\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a609c4098f97\"  \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/edukemy.com\/blog\/upsc-prelims-2022-question-99\/#Q99_Consider_the_following_statements_DNA_Barcoding_can_be_a_tool_to\" >Q99. Consider the following statements: DNA Barcoding can be a tool to:<\/a><\/li><\/ul><\/nav><\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Q99_Consider_the_following_statements_DNA_Barcoding_can_be_a_tool_to\"><\/span>Q99. Consider the following statements: DNA Barcoding can be a tool to:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>Assess the age of a plant or animal.<\/li><li>Distinguish among species that look alike.<\/li><li>Identify undesirable animal or plant materials in processed foods.<\/li><\/ol>\n\n\n\n<p>Which of the statements given above is\/are correct?<br>a) 1 only<br>b) 3 only<br>c) 1 and 2<br>d) 2 and 3<\/p>\n\n\n\n<p>Answer &#8211; D<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>DNA barcoding is a method of species identification using a short section of DNA from a specific gene or genes.<\/li><li><strong>Option 1 is incorrect: <\/strong>Geologists use the Carbon Dating method Carbon-14 to measure the age of plant and animal remains from the more recent past.<\/li><li><strong>Option 2 is correct:<\/strong> DNA barcodes allow non-experts to objectively identify species. The unique pattern of bars in a universal product code (UPC) identifies each consumer product, a \u201cDNA barcode\u201d is a unique pattern of DNA sequence that can potentially identify each living thing.<\/li><li><strong>Option 3 is correct.<\/strong> cpDNA and mtDNA barcoding protocols are being used more and more in the food industry and food supply chains for food labeling, not only to support food safety but also to uncover food piracy in freshly commercialized and technologically processed products. DNA barcoding helps to identify undesirable animal or plant materials in processed foods.<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/edukemy.com\/upsc\/upsc-essay?utm_source=Blog&amp;utm_medium=Banner&amp;utm_campaign=Essay\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" data-src=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/UPSC-Essay-Course-1280\u00d7300-1-3.svg\" alt=\"\" class=\"wp-image-42688 lazyload\" width=\"781\" height=\"182\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 781px; --smush-placeholder-aspect-ratio: 781\/182;\" \/><\/a><\/figure>\n\n\n\n<p>For UPSC Prelims Resources,&nbsp;<a href=\"https:\/\/edukemy.com\/upsc-cse-prelims-resource-centre\" target=\"_blank\" rel=\"noreferrer noopener\">Click here<\/a><\/p>\n\n\n\n<p>For Daily Updates and Study Material:<\/p>\n\n\n\n<p>Join our Telegram Channel \u2013&nbsp;<a href=\"https:\/\/t.me\/WithEdukemy4IAS\" target=\"_blank\" rel=\"noreferrer noopener\">Edukemy for IAS<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>1. 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Consider the following statements: DNA Barcoding can be a tool to:<\/p>\n<p>Assess the age of a plant or animal.<\/p>\n<p>Distinguish among species that look alike.<\/p>\n","protected":false},"author":17,"featured_media":29294,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[1644],"tags":[232,515,231],"class_list":["post-29293","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-upsc-prelims","tag-upsc","tag-upsc-cse","tag-upsc-prelims"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"Q99. 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