{"id":1481,"date":"2020-08-07T00:54:54","date_gmt":"2020-08-07T00:54:54","guid":{"rendered":"https:\/\/meddists.com\/learn\/pre-clinical\/medical-genetics\/genetic-diseases\/genetic-diseases-x-linked-dominant-diseases\/"},"modified":"2020-08-07T01:05:42","modified_gmt":"2020-08-07T01:05:42","slug":"genetic-diseases-x-linked-dominant-diseases","status":"publish","type":"page","link":"https:\/\/meddists.com\/learn\/pre-clinical\/medical-genetics\/genetic-diseases\/genetic-diseases-x-linked-dominant-diseases\/","title":{"rendered":"Genetic Diseases: X linked Dominant Diseases"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Fragile X syndrome<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>This is a disorder characterised by mental and learning disabilities.<\/li><li>It is caused by a<strong> triplet expansion<\/strong> of the CGG repeat when it is repeated more than 200 times.<\/li><li>Triplet expansions are also known as <strong>dynamic mutations&nbsp;<\/strong>caused by&nbsp;slipped mispairing mutations during DNA replication<\/li><li>&nbsp;The number of repeats increases with every generation. This means that the age of onset will be earlier in each new generation. This phenomenon is known as <strong>anticipation<\/strong>.<\/li><li>Anticipation is also observed in Huntington&#8217;s disease; another triplet expansion.<\/li><\/ul>\n<div id=\"the_titles\" style=\"display:none;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Fragile X syndrome This is a disorder characterised by mental and learning disabilities. It is caused by a triplet expansion of the CGG repeat when it is repeated more than 200 times. Triplet expansions are also known as dynamic mutations&nbsp;caused by&nbsp;slipped mispairing mutations during DNA replication &nbsp;The number of repeats increases with every generation. This [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1450,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1481","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Genetic Diseases: X linked Dominant Diseases &#8211; Meddists<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/meddists.com\/learn\/pre-clinical\/medical-genetics\/genetic-diseases\/genetic-diseases-x-linked-dominant-diseases\/\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/meddists.com\\\/learn\\\/pre-clinical\\\/medical-genetics\\\/genetic-diseases\\\/genetic-diseases-x-linked-dominant-diseases\\\/\",\"url\":\"https:\\\/\\\/meddists.com\\\/learn\\\/pre-clinical\\\/medical-genetics\\\/genetic-diseases\\\/genetic-diseases-x-linked-dominant-diseases\\\/\",\"name\":\"Genetic Diseases: X linked Dominant Diseases &#8211; 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