{"id":199699,"date":"2025-03-12T10:34:10","date_gmt":"2025-03-12T10:34:10","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=199699"},"modified":"2025-03-12T10:34:13","modified_gmt":"2025-03-12T10:34:13","slug":"redundancy-or-degeneration-of-the-genetic-code-occurs-during-which-step-of-protein-synthesis","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/12\/redundancy-or-degeneration-of-the-genetic-code-occurs-during-which-step-of-protein-synthesis\/","title":{"rendered":"\u201cRedundancy\u201d or \u201cdegeneration\u201d of the genetic code occurs during which step of protein synthesis"},"content":{"rendered":"\n

\u201cRedundancy\u201d or \u201cdegeneration\u201d of the genetic code occurs during which step of protein synthesis?<\/p>\n\n\n\n

A) DNA replication <\/p>\n\n\n\n

B) Transcription <\/p>\n\n\n\n

C) Post-transcriptional modification <\/p>\n\n\n\n

D) Translation<\/p>\n\n\n\n

E) Protein glycosylation<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The correct answer is:
D) Translation<\/strong><\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

The genetic code is described as redundant (or degenerate)<\/strong> because multiple codons can code for the same amino acid. This characteristic of the genetic code is particularly relevant during the translation<\/strong> phase of protein synthesis.<\/p>\n\n\n\n

Understanding Redundancy in the Genetic Code:<\/strong><\/h4>\n\n\n\n

The genetic code consists of 64 codons<\/strong> (triplets of nucleotides) that specify 20 amino acids<\/strong> and stop signals. This means that more than one codon can specify the same amino acid. For example:<\/p>\n\n\n\n

    \n
  • Leucine (Leu)<\/strong> is encoded by six different codons: CUU, CUC, CUA, CUG, UUA, UUG<\/strong>.<\/li>\n\n\n\n
  • Serine (Ser)<\/strong> is encoded by six codons: UCU, UCC, UCA, UCG, AGU, AGC<\/strong>.<\/li>\n<\/ul>\n\n\n\n

    This redundancy helps protect against the effects of point mutations<\/strong> (changes in a single nucleotide). A mutation in the third position of a codon (the wobble position<\/strong>) often does not alter the amino acid sequence, making the genetic code more fault-tolerant<\/strong>.<\/p>\n\n\n\n

    Why Does Redundancy Occur in Translation?<\/strong><\/h4>\n\n\n\n

    During translation, tRNA molecules recognize codons on the mRNA through their anticodons<\/strong> and bring the corresponding amino acids. Since multiple codons can correspond to the same amino acid, some tRNA molecules recognize more than one codon<\/strong>, further contributing to the degeneracy of the genetic code.<\/p>\n\n\n\n

    Why Not the Other Steps?<\/strong><\/h4>\n\n\n\n
      \n
    • A) DNA replication<\/strong> \u2013 This is the process of copying DNA before cell division and does not involve codons.<\/li>\n\n\n\n
    • B) Transcription<\/strong> \u2013 This converts DNA into mRNA but does not involve the selection of amino acids.<\/li>\n\n\n\n
    • C) Post-transcriptional modification<\/strong> \u2013 This occurs in eukaryotes (e.g., splicing, polyadenylation) but does not impact codon redundancy.<\/li>\n\n\n\n
    • E) Protein glycosylation<\/strong> \u2013 This is a post-translational modification affecting proteins after translation.<\/li>\n<\/ul>\n\n\n\n

      Thus, redundancy of the genetic code primarily affects the translation<\/strong> process.<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u201cRedundancy\u201d or \u201cdegeneration\u201d of the genetic code occurs during which step of protein synthesis? A) DNA replication B) Transcription C) Post-transcriptional modification D) Translation E) Protein glycosylation The correct answer and explanation is : The correct answer is:D) Translation Explanation: The genetic code is described as redundant (or degenerate) because multiple codons can code for […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-199699","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/199699","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=199699"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/199699\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=199699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=199699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=199699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}