{"id":85834,"date":"2025-06-01T03:29:03","date_gmt":"2025-06-01T03:29:03","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=85834"},"modified":"2025-06-01T03:29:03","modified_gmt":"2025-06-01T03:29:03","slug":"which-one-of-the-following-statements-explains-higher-mutation-rate-an","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-explains-higher-mutation-rate-an\/","title":{"rendered":"Which one of the following statements explains higher mutation rate an"},"content":{"rendered":"

Which one of the following statements explains higher mutation rate and faster evolution found in RNA virus?<\/p>\n

[amp_mcq option1=”RNA is relatively unstable compared to DNA.” option2=”Virus can multiply only within the living cell of a host.” option3=”Metabolic processes are absent in virus.” option4=”Virus can remain latent for a long period.” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-2 – 2018<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct answer is A) RNA is relatively unstable compared to DNA.
\n<\/section>\n
\nRNA molecules are generally less stable than DNA molecules primarily because of the presence of a hydroxyl group at the 2′ carbon of the ribose sugar, which makes the phosphodiester bond more susceptible to hydrolysis. Additionally, RNA viruses typically lack the proofreading mechanisms that DNA polymerases have, leading to a much higher error rate during replication. These factors result in a higher mutation rate.
\n<\/section>\n
\nHigher mutation rates in RNA viruses contribute to faster evolution, allowing them to adapt quickly to changing environments, evade host immune responses, and develop resistance to antiviral drugs. Options B, C, and D describe general characteristics of viruses but do not specifically explain the higher mutation rate or faster evolution relative to DNA viruses or other life forms.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following statements explains higher mutation rate and faster evolution found in RNA virus? [amp_mcq option1=”RNA is relatively unstable compared to DNA.” option2=”Virus can multiply only within the living cell of a host.” option3=”Metabolic processes are absent in virus.” option4=”Virus can remain latent for a long period.” correct=”option1″] This question was previously … <\/p>\n

Detailed SolutionWhich one of the following statements explains higher mutation rate an<\/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":[1088],"tags":[1114,1117,1139],"class_list":["post-85834","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1114","tag-biology","tag-viral-diseases","no-featured-image-padding"],"yoast_head":"\nWhich one of the following statements explains higher mutation rate an<\/title>\n<meta name=\"description\" content=\"The correct answer is A) RNA is relatively unstable compared to DNA. RNA molecules are generally less stable than DNA molecules primarily because of the presence of a hydroxyl group at the 2' carbon of the ribose sugar, which makes the phosphodiester bond more susceptible to hydrolysis. Additionally, RNA viruses typically lack the proofreading mechanisms that DNA polymerases have, leading to a much higher error rate during replication. These factors result in a higher mutation rate.\" \/>\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\/which-one-of-the-following-statements-explains-higher-mutation-rate-an\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following statements explains higher mutation rate an\" \/>\n<meta property=\"og:description\" content=\"The correct answer is A) RNA is relatively unstable compared to DNA. RNA molecules are generally less stable than DNA molecules primarily because of the presence of a hydroxyl group at the 2' carbon of the ribose sugar, which makes the phosphodiester bond more susceptible to hydrolysis. Additionally, RNA viruses typically lack the proofreading mechanisms that DNA polymerases have, leading to a much higher error rate during replication. These factors result in a higher mutation rate.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-explains-higher-mutation-rate-an\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:29:03+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":"Which one of the following statements explains higher mutation rate an","description":"The correct answer is A) RNA is relatively unstable compared to DNA. 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