{"version":"1.0","provider_name":"\u0645\u0624\u0633\u0633\u0629 \u0627\u0644\u0641\u0644\u0643 \u0627\u0644\u062e\u064a\u0631\u064a\u0629","provider_url":"https:\/\/alfolk.net\/en\/","title":"Down Syndrome (Part 2) - \u0645\u0624\u0633\u0633\u0629 \u0627\u0644\u0641\u0644\u0643 \u0627\u0644\u062e\u064a\u0631\u064a\u0629","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"FvrBSZ2RBk\"><a href=\"https:\/\/alfolk.net\/en\/down-syndrome-part-2\/\">Down Syndrome (Part 2)<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/alfolk.net\/en\/down-syndrome-part-2\/embed\/#?secret=FvrBSZ2RBk\" width=\"600\" height=\"338\" title=\"&#8220;Down Syndrome (Part 2)&#8221; &#8212; \u0645\u0624\u0633\u0633\u0629 \u0627\u0644\u0641\u0644\u0643 \u0627\u0644\u062e\u064a\u0631\u064a\u0629\" data-secret=\"FvrBSZ2RBk\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/*! This file is auto-generated *\/\n!function(c,d){\"use strict\";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(\/[^a-zA-Z0-9]\/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),n=d.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),o=new RegExp(\"^https?:$\",\"i\"),l=0;l<n.length;l++)n[l].style.display=\"none\";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute(\"style\"),\"height\"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if(\"link\"===t.message)if(s=d.createElement(\"a\"),a=d.createElement(\"a\"),s.href=r.getAttribute(\"src\"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener(\"message\",c.wp.receiveEmbedMessage,!1),d.addEventListener(\"DOMContentLoaded\",t,!1),c.addEventListener(\"load\",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf(\"MSIE 10\"),a=!!navigator.userAgent.match(\/Trident.*rv:11\\.\/),i=d.querySelectorAll(\"iframe.wp-embedded-content\"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute(\"data-secret\")))r=Math.random().toString(36).substr(2,10),t.src+=\"#?secret=\"+r,t.setAttribute(\"data-secret\",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute(\"security\"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:\"ready\",secret:r},\"*\")}}}}(window,document);\n<\/script>\n","thumbnail_url":"https:\/\/alfolk.net\/wp-content\/uploads\/2021\/07\/WhatsApp-Image-2021-07-05-at-4.23.28-PM-1.jpeg","thumbnail_width":1012,"thumbnail_height":506,"description":"In the previous article, we learned about chromosomes as tiny particles that exist in pairs inside the nuclei of cells and carry genetic material. We also learned about the types of cells (somatic and reproductive), and that human somatic cells contain (23 pairs of chromosomes) = 46 chromosomes; and a person with Down syndrome has 47 chromosomes, due to the presence of three copies of chromosome no. 21. Therefore, this syndrome is called trisomy 21 syndrome. The presence of this extra chromosome causes an impediment in the normal growth and development of the brain, with the appearance of special physical features. Scientists did not provide specific reasons for this change in chromosomes, but they point to several reasons that may increase the risk of developing Down syndrome in the fetus, the most important of which are: 1 &#8211; The age of the spouses at the time of pregnancy increases the risk of developing a fetus with Down syndrome (women of 35 years and over and men of 40 years and over) 2 &#8211; A previous birth of a child with Down syndrome in the family. Down syndrome types Do you know that there is more than one type of Down syndrome? Scientists classify Down syndrome into three different types, varying in the degree of symptoms: Type I: (trisomy 21) It is the most common type of Down syndrome (about 95% of all cases of Down syndrome) as a result of the presence of 47 chromosomes instead of 46 chromosomes since the beginning of the zygote and that as previously mentioned, there are three chromosomes of chromosome number 21 not pair in each cell of the body cells. The second type: (transitional) This type represents about 4% of cases of Down syndrome, in this case, part of chromosome 21 is broken during cell division, and it is attached to another chromosome, often chromosome number 14. In this type, the number of chromosomes remains 46 in all cells, but features of Down syndrome appear due to the presence of an extra part of chromosome 21. The third type: (mosaic) In this type, [&hellip;]"}