{"id":4536,"date":"2024-09-14T22:24:16","date_gmt":"2024-09-14T13:24:16","guid":{"rendered":"https:\/\/www.hiro-clinic.or.jp\/nippt\/principles-of-dna-paternity-testing\/"},"modified":"2024-09-27T15:59:05","modified_gmt":"2024-09-27T06:59:05","slug":"principles-of-dna-paternity-testing","status":"publish","type":"post","link":"https:\/\/www.hiro-clinic.or.jp\/nippt\/principles-of-dna-paternity-testing\/?lang=en","title":{"rendered":"Principles of DNA Paternity Tests"},"content":{"rendered":"\n<p>The <strong>principles of DNA paternity<\/strong> testing refer to the basic concepts and methodologies used to scientifically prove parent-child relationships. DNA testing is used to confirm parent-child relationships with a very high degree of accuracy and is based primarily on the following principles<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>Half of the genetic information is inherited from the mother and half from the father<\/strong><\/h3>\n\n\n\n<p>DNA is passed from parents to their children in the form of genes. Specifically, <strong>half of human DNA is inherited from the mother and the other half from the father<\/strong>. In the paternity test, the DNA of both parents is compared with that of the child to confirm the genetic match between the two.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A child&#8217;s DNA is composed of a combination of the mother&#8217;s and father&#8217;s genes, so there will always be a portion that matches the mother and a portion that matches the father.<\/li>\n<\/ul>\n\n\n\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>Analysis using specific genetic markers<\/strong><\/h3>\n\n\n\n<p>In DNA testing, certain genetic markers, such as <strong>Short Tandem Repeat (<a href=\"https:\/\/www.hiro-clinic.or.jp\/nippt\/accuracy\/\">STR<\/a>)<\/strong>, are used to prove parent-child relationships. These markers are repeat sequences within individual DNA that are compared between parent and child.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The child&#8217;s marker is compared to the paternal marker to see if they match.If the mother&#8217;s and father&#8217;s respective markers match the child&#8217;s markers, the parent-child relationship is confirmed.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>Scientific probability calculation<\/strong><\/h3>\n\n\n\n<p>In the paternity test, the probability of a parent-child relationship is calculated based on the degree of match between DNA markers. Usually, a match of 99.9% or more proves the parent-child relationship, while a match close to 0% denies the parent-child relationship.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Since <strong>extremely high accuracy is required to determine parent-child relationships<\/strong>, DNA testing is trusted as a scientifically reliable method.<\/li>\n<\/ul>\n\n\n\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong>Accurate handling of specimens<\/strong><\/h3>\n\n\n\n<p>To obtain accurate results, DNA samples must be handled properly. If the sample is not accurate, the results may be erroneous.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Samples are taken from oral cells, blood, or hair. Poor quality, contamination, or adulteration of the samples may result in inaccurate results.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5. <strong>Non-invasive sample collection<\/strong><\/h3>\n\n\n\n<p>The most common method of DNA analysis is usually to collect cells from the mucous membranes of the oral cavity using a cotton swab. This method is <strong>non-invasive<\/strong>, painless, and safe for babies, children, and adults, so it is widely adopted as the procedure for DNA analysis.<\/p>\n\n\n\n\n\n\n<h3 class=\"wp-block-heading\">6. <strong>Denial of parent-child relationship is certain<\/strong><\/h3>\n\n\n\n<p><strong>A<\/strong> paternity test <strong>can negate the parent-child relationship with 100% certainty<\/strong> if it is confirmed that the prospective father does not share genes with the child. This is because a child&#8217;s DNA is always inherited from both parents, and if there is no match, it proves that no parent-child relationship exists.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. <strong>99.99% or better accuracy in confirming parent-child relationship<\/strong><\/h3>\n\n\n\n<p>When affirming the parent-child relationship, the probability is usually determined to be 99.9999999% or higher. Although it is theoretically difficult to completely affirm the parent-child relationship, a probability of 99.99% or higher is considered sufficient evidence to scientifically prove the parent-child relationship.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8. <strong>Legally recognized procedures<\/strong><\/h3>\n\n\n\n<p>In proving a legal parent-child relationship, <strong>the<\/strong> results of an appraisal must be <strong>tested in a legally recognized facility in<\/strong> order to be valid. In cases involving a trial or other legal proceedings, the appraisal process must be strictly controlled and certain criteria must be followed in order for the results to be used as evidence.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Summary<\/h3>\n\n\n\n<p>DNA paternity testing is a method that can determine parent-child relationships with a very high degree of accuracy based on scientific principles. Positive or negative results are determined by comparing genetic information with an accuracy of 99.9% or higher, making it a highly reliable means of proving parent-child relationships.<\/p>\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>The principles of DNA paternity testing refer to the basic concepts and methodologies&#8230;<\/p>\n","protected":false},"author":5,"featured_media":3240,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[73,69,39,92,74,71,76,72],"class_list":{"0":"post-4536","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-nippt-en","8":"tag-dna_profiling-en","9":"tag-dna_test-en","10":"tag-expert-en","11":"tag-mother-en","12":"tag-accuracy-en","13":"tag-parent_child-en","14":"tag-genetic_testing-en","15":"tag-analysis-en","16":"article"},"acf":[],"_links":{"self":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/posts\/4536","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/comments?post=4536"}],"version-history":[{"count":2,"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/posts\/4536\/revisions"}],"predecessor-version":[{"id":4542,"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/posts\/4536\/revisions\/4542"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/media\/3240"}],"wp:attachment":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/media?parent=4536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/categories?post=4536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nippt\/wp-json\/wp\/v2\/tags?post=4536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}