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Additional items compare mitosis and meiosis, analyze DNA mass and chromosome counts across nuclei, and explain sterility after cross-breeding.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/aqa-biology-a-level-mutation-and-meiosis-qp-questions/457224/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/aqa-biology-a-level-mutation-and-meiosis-qp-questions/457224.png","ImageObject",300,407,{"name":42,"@type":43},"acoobca","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-18","2026-09-30",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",7,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What is a mutagenic agent, according to the question?","Question",{"text":63,"@type":64},"The question asks students to provide a definition of “mutagenic agent”.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How should chromosome numbers be determined for Spartina anglica after a mutation?",{"text":68,"@type":64},"Students complete Figure 1 with correct chromosome numbers for different boxes and then identify the mutation type that changed Spartina townsendii to produce Spartina anglica, explaining the reasoning.",{"name":70,"@type":61,"acceptedAnswer":71},"How can a student test whether a mutation involved adding one nucleotide?",{"text":72,"@type":64},"The question provides an amino-acid sequence after the mutation and the original DNA template figure. Students must check whether the change is consistent with the effect of adding one nucleotide, giving reasons based on the patterns in the translation.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},457224,1791318095,{"code":4,"msg":82,"data":83},"success",[84,88,92,95,100,105,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":93,"slug":94},70,"exam",{"id":96,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":102,"show_sort_weight":103,"slug":104},6,"Technology",50,"technology",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":96,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":139,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":144,"read_time":145},3985747870733,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","AQA Biology A-Level-Mutation and Meiosis QP [PhysicsAndMathsTutor.com](PhysicsAndMathsTutor.com)  \nQ1 .  \n(b) Define the term mutagenic agent.  \n\n|  |\n| --- |\n|  |\n\n(1)  \n(c) Figure 1 shows how the species Spartina townsendii is produced.  \nThe number of chromosomes in cells is shown in some of the boxes.  \nFigure 1  \nComplete Figure 1 by giving the correct number of chromosomes in each of the boxes.  \n(1)  \nA mutation in the number of chromosomes in a S. townsendii cell produced anew species, Spartina anglica.  \nFigure 2 shows the number of chromosomes in leaf cells of these species.  \nFigure 2  \nAQA Biology A-Level-Mutation and Meiosis QP [PhysicsAndMathsTutor.com](PhysicsAndMathsTutor.com)  \n(d) Name the type of mutation that changed the number of chromosomes in S.  \ntownsendii to produce S. anglica. Explain your answer.  \nName of mutation    \nExplanation    \n\n|  |\n| --- |\n|  |\n|  |\n|  |\n|  |\n|  |\n|  |\n\n(3)  \n(e) Genetic variation within a species is increased during meiosis by crossing over and the independent segregation of homologous chromosomes.  \nApart from mutation, explain one other way genetic variation within a  \nspecies is increased.  \n\n|  |\n| --- |\n|  |\n|  |\n|  |\n\n(2)  \nAQA Biology A-Level-Mutation and Meiosis QP [PhysicsAndMathsTutor.com](PhysicsAndMathsTutor.com)  \nQ2 .  \nThe table below shows mRNA codons for some amino acids.  \n\n| Serine | Proline | Glycine | Threonine | Alanine |\n| --- | --- | --- | --- | --- |\n| UCU | CCU | GGA | ACU | GCA |\n| UCC | CCA | GGG | ACC | GCG |\n\n(c) Figure 1 shows the DNA template nucleotide base sequence that determines the sequence of four amino acids.  \nFigure 1  \nAGG CGT CCT GGA  \nUse information from the table and Figure 1 to give the amino acid sequence determined by this sequence of nucleotides.  \n(1)  \n(d) A mutation in the nucleotide sequence shown in Figure 1 resulted in the following amino acid sequence.  \nFigure 2  \nSerine Glycine Glycine Proline  \nA student concluded that the mutation involved the addition of one nucleotide within the sequence shown Figure 1. Does information in this question support the student’s conclusion? Give reasons for your answer.  \n\n|  |\n| --- |\n|  |\n|  |\n|  |\n|  |\n|  |\n|  |\n|  |\n\n(2)  \nAQA Biology A-Level-Mutation and Meiosis QP [PhysicsAndMathsTutor.com](PhysicsAndMathsTutor.com)  \nQ3 .  \nTrout is a type of fish, often produced commercially in trout farms.  \n(b) A trout body cell contains 80 chromosomes.  \nThe table below shows the number of chromosomes and the mass of DNA in different nuclei. All the nuclei are from the same trout.  \nComplete the table below.  \n\n| Nucleus | Number of chromosomes | Mass of DNA / arbitrary units |\n| --- | --- | --- |\n| At prophase of mitosis | 80 |  |\n| At telophase of mitosis |  | 25 |\n| From an egg cell |  |  |\n\n(c) Give one reason why trout eggs produced by meiosis are genetically different.  \n(2)  \n\n|  |\n| --- |\n|  |\n|  |\n\n(1)  \nA trout body cell contains 80 chromosomes.  \nFarmed female trout are treated so that they produce diploid egg cells.  \n(d) Give the number of chromosomes in body cells of the offspring produced from treated farmed female trout and untreated farmed male trout.  \nNumber of chromosomes    \n(1)  \nAQA Biology A-Level-Mutation and Meiosis QP [PhysicsAndMathsTutor.com](PhysicsAndMathsTutor.com)  \n(e) The offspring produced from farmed trout are sterile. Suggest and explain why.  \n\n|  |\n| --- |\n|  |\n|  |\n|  |\n|  |\n\n(2)  \nQ4 .  \n(c) Define ‘gene mutation’ and explain how a gene mutation can have:  \n• no effect on an individual  \n• a positive effect on an individual.  \n\n|  |\n| --- |\n|  |\n|  |\n|  |\n|  |\n|  |\n|  |\n|  |\n|  |\n|  |\n|  |\n\n(4)  \nAQA Biology A-Level-Mutation and Meiosis QP [PhysicsAndMathsTutor.com](PhysicsAndMathsTutor.com)  \nQ5 .  \nA scientist crossed a strain of the fungus Neurospora producing pink spores with  \na strain of Neurospora producing white spores.  \nIn the life cycle of Neurospora most stages are haploid. Fusion of two haploid  \nstrains of this fungus produces diplo","cbCaioADED0tPyKi","https://ap.wps.com/l/cbCaioADED0tPyKi","pdf",751441,22,"English","# Q1\n## (b) Define mutagenic agent\n## (c) Complete Figure 1 chromosome numbers\n## (d) Name and explain chromosome-number mutation\n## (e) Other causes of genetic variation\n# Q2\n## (c) Determine amino acid sequence from DNA template\n## (d) Evaluate conclusion about nucleotide addition\n# Q3\n## (b) Complete DNA mass and chromosome table\n## (c) Reason for genetic difference in meiosis-produced eggs\n## (d) Chromosome number in offspring from treated females and untreated males\n## (e) Explain sterility of offspring","[{\"question\":\"What is a mutagenic agent, according to the question?\",\"answer\":\"The question asks students to provide a definition of “mutagenic agent”.\"},{\"question\":\"How should chromosome numbers be determined for Spartina anglica after a mutation?\",\"answer\":\"Students complete Figure 1 with correct chromosome numbers for different boxes and then identify the mutation type that changed Spartina townsendii to produce Spartina anglica, explaining the reasoning.\"},{\"question\":\"How can a student test whether a mutation involved adding one nucleotide?\",\"answer\":\"The question provides an amino-acid sequence after the mutation and the original DNA template figure. Students must check whether the change is consistent with the effect of adding one nucleotide, giving reasons based on the patterns in the translation.\"}]","AQA Biology A-Level-Mutation and Meiosis QP - Questions | PDF",1790748656,55]