{"id":26399,"date":"2020-07-06T06:56:09","date_gmt":"2020-07-06T06:56:09","guid":{"rendered":"https:\/\/www.healthbenefitstimes.com\/glossary\/?p=26399"},"modified":"2020-07-06T06:56:09","modified_gmt":"2020-07-06T06:56:09","slug":"chromosome-21","status":"publish","type":"post","link":"https:\/\/www.healthbenefitstimes.com\/glossary\/chromosome-21\/","title":{"rendered":"Chromosome 21"},"content":{"rendered":"<p>The chromosome involved in down syndrome (trisomy 21), which is most frequently due to nondisjunction of chromosome 21, resulting in 3, rather than 2, chromosomes (and making the total 47 chromosomes rather than the normal total of 46). The genetic defect in familial alzheimer\u2019s disease is located on chromosome 21, the same chromosome that has an extra copy in down syndrome. This finding supports the idea that at least one form of alzheimer\u2019s disease is inherited and that a similar genetic defect may occur in both down syndrome and familial alzheimer\u2019s disease.<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The chromosome involved in down syndrome (trisomy 21), which is most frequently due to nondisjunction of chromosome 21, resulting in 3, rather than 2, chromosomes (and making the total 47 chromosomes rather than the normal total of 46). The genetic defect in familial alzheimer\u2019s disease is located on chromosome 21, the same chromosome that has [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-26399","post","type-post","status-publish","format-standard","hentry","category-c"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Chromosome 21 - Definition of Chromosome 21<\/title>\n<meta name=\"description\" content=\"The chromosome involved in down syndrome (trisomy 21), which is most frequently due to nondisjunction of chromosome 21, resulting in 3, rather than 2, chromosomes (and making the total 47 chromosomes rather than the normal total of 46). The genetic defect in familial alzheimer\u2019s disease is located on chromosome 21, the same chromosome that has an extra copy in down syndrome. This finding supports the idea that at least one form of alzheimer\u2019s disease is inherited and that a similar genetic defect may occur in both down syndrome and familial alzheimer\u2019s disease.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.healthbenefitstimes.com\/glossary\/chromosome-21\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chromosome 21 - Definition of Chromosome 21\" \/>\n<meta property=\"og:description\" content=\"The chromosome involved in down syndrome (trisomy 21), which is most frequently due to nondisjunction of chromosome 21, resulting in 3, rather than 2, chromosomes (and making the total 47 chromosomes rather than the normal total of 46). The genetic defect in familial alzheimer\u2019s disease is located on chromosome 21, the same chromosome that has an extra copy in down syndrome. This finding supports the idea that at least one form of alzheimer\u2019s disease is inherited and that a similar genetic defect may occur in both down syndrome and familial alzheimer\u2019s disease.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.healthbenefitstimes.com\/glossary\/chromosome-21\/\" \/>\n<meta property=\"og:site_name\" content=\"Glossary\" \/>\n<meta property=\"article:published_time\" content=\"2020-07-06T06:56:09+00:00\" \/>\n<meta name=\"author\" content=\"Glossary\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Glossary\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.healthbenefitstimes.com\/glossary\/chromosome-21\/\",\"url\":\"https:\/\/www.healthbenefitstimes.com\/glossary\/chromosome-21\/\",\"name\":\"Chromosome 21 - Definition of Chromosome 21\",\"isPartOf\":{\"@id\":\"https:\/\/www.healthbenefitstimes.com\/glossary\/#website\"},\"datePublished\":\"2020-07-06T06:56:09+00:00\",\"dateModified\":\"2020-07-06T06:56:09+00:00\",\"author\":{\"@id\":\"https:\/\/www.healthbenefitstimes.com\/glossary\/#\/schema\/person\/ccfef987a4882e6356ae6d77d33e74c5\"},\"description\":\"The chromosome involved in down syndrome (trisomy 21), which is most frequently due to nondisjunction of chromosome 21, resulting in 3, rather than 2, chromosomes (and making the total 47 chromosomes rather than the normal total of 46). The genetic defect in familial alzheimer\u2019s disease is located on chromosome 21, the same chromosome that has an extra copy in down syndrome. 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The genetic defect in familial alzheimer\u2019s disease is located on chromosome 21, the same chromosome that has an extra copy in down syndrome. This finding supports the idea that at least one form of alzheimer\u2019s disease is inherited and that a similar genetic defect may occur in both down syndrome and familial alzheimer\u2019s disease.","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:\/\/www.healthbenefitstimes.com\/glossary\/chromosome-21\/","og_locale":"en_US","og_type":"article","og_title":"Chromosome 21 - Definition of Chromosome 21","og_description":"The chromosome involved in down syndrome (trisomy 21), which is most frequently due to nondisjunction of chromosome 21, resulting in 3, rather than 2, chromosomes (and making the total 47 chromosomes rather than the normal total of 46). The genetic defect in familial alzheimer\u2019s disease is located on chromosome 21, the same chromosome that has an extra copy in down syndrome. 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