{"id":1074,"date":"2024-03-05T15:10:59","date_gmt":"2024-03-05T15:10:59","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=1074"},"modified":"2024-03-05T15:10:59","modified_gmt":"2024-03-05T15:10:59","slug":"in-which-stage-of-meiotic-cell-division-chiasmata-are-formed","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-which-stage-of-meiotic-cell-division-chiasmata-are-formed\/","title":{"rendered":"In which stage of meiotic cell division chiasmata are formed ?"},"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_6a981934ce172\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Metaphase                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Anaphase                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"true\">\r\n                    Prophase                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Telophase                 <\/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 (c). Chiasmata are formed during prophase I of meiosis. They are the physical manifestation of the crossing over that occurs between homologous chromosomes during this stage. Crossing over is the exchange of genetic material between homologous chromosomes, and it is a key event in meiosis that increases genetic diversity.<\/p>\n<p>During prophase I, the chromosomes condense and become visible. The homologous chromosomes pair up and form bivalents. The synaptonemal complex forms between the homologous chromosomes, and this is where crossing over occurs. The chiasmata are visible as the points where the synaptonemal complex breaks and reforms.<\/p>\n<p>After crossing over, the homologous chromosomes are still held together by the chiasmata. This allows them to be pulled apart during anaphase I. The chiasmata eventually disappear during telophase I.<\/p>\n<p>(a) Metaphase I <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> is the stage of meiosis where the chromosomes line up at the metaphase plate. The homologous chromosomes are still <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> paired up at this stage, but the chiasmata are not visible.<\/p>\n<p>(b) Anaphase I is the stage of meiosis where the homologous chromosomes are pulled apart to opposite poles of the cell. The chiasmata are still visible at this stage, but they are not necessary for the separation of the homologous chromosomes.<\/p>\n<p>(d) Telophase I is the stage of meiosis where the chromosomes decondense and the nuclear envelope reforms. The chiasmata have disappeared by this stage.<\/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>In which stage of meiotic cell division chiasmata are formed ?<\/title>\n<meta name=\"description\" content=\"During prophase I, the chromosomes condense and become visible. The homologous chromosomes pair up and form bivalents. The synaptonemal complex forms between the homologous chromosomes, and this is where crossing over occurs. The chiasmata are visible as the points where the synaptonemal complex breaks and reforms.\" \/>\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\/in-which-stage-of-meiotic-cell-division-chiasmata-are-formed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"In which stage of meiotic cell division chiasmata are formed ?\" \/>\n<meta property=\"og:description\" content=\"During prophase I, the chromosomes condense and become visible. The homologous chromosomes pair up and form bivalents. The synaptonemal complex forms between the homologous chromosomes, and this is where crossing over occurs. The chiasmata are visible as the points where the synaptonemal complex breaks and reforms.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/in-which-stage-of-meiotic-cell-division-chiasmata-are-formed\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-05T15:10:59+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":"In which stage of meiotic cell division chiasmata are formed ?","description":"During prophase I, the chromosomes condense and become visible. The homologous chromosomes pair up and form bivalents. The synaptonemal complex forms between the homologous chromosomes, and this is where crossing over occurs. The chiasmata are visible as the points where the synaptonemal complex breaks and reforms.","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\/in-which-stage-of-meiotic-cell-division-chiasmata-are-formed\/","og_locale":"en_US","og_type":"article","og_title":"In which stage of meiotic cell division chiasmata are formed ?","og_description":"During prophase I, the chromosomes condense and become visible. The homologous chromosomes pair up and form bivalents. The synaptonemal complex forms between the homologous chromosomes, and this is where crossing over occurs. 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The homologous chromosomes pair up and form bivalents. The synaptonemal complex forms between the homologous chromosomes, and this is where crossing over occurs. 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