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18926669599 0763-3850669事實(shi)上,親(qin)子鑒定(ding)并沒有因(yin)為不好(hao)或者隱私問(wen)題而被人(ren)們(men)詬(gou)病。另一方面,因(yin)為親(qin)子鑒定(ding)可以了解(jie)事情的(de)真相,所以它也是最準確的(de)血液(ye)檢(jian)查。下面,航澤親(qin)子鑒定(ding)中心為您介(jie)紹(shao)親(qin)子鑒定(ding)的(de)種類(lei)和(he)原理。
清遠親子鑒定的原理
親(qin)子(zi)(zi)鑒(jian)定的主要原理是(shi):每個人(ren)的DNA遺(yi)傳物(wu)質一半來自母親(qin)(卵子(zi)(zi)),一半來自父(fu)親(qin)(精子(zi)(zi));因此,孩子(zi)(zi)的一對等位(wei)基因一個來自母親(qin),一個來自父(fu)親(qin)。如(ru)果檢測(ce)到多對等位(wei)基因,如(ru)果鑒(jian)定結果均符合該規則,則表明存在生物(wu)學意義上(shang)的親(qin)子(zi)(zi)關(guan)系;如(ru)果不(bu)滿足(zu)此規則,則排除父(fu)子(zi)(zi)關(guan)系(變(bian)異(yi)除外)。
清遠親子鑒定的類型
在法(fa)醫學中,親(qin)(qin)(qin)(qin)子(zi)(zi)(zi)(zi)鑒(jian)(jian)(jian)定(ding)(ding)根(gen)據鑒(jian)(jian)(jian)定(ding)(ding)人員的(de)構成(cheng)分為標準三胞(bao)胎和雙親(qin)(qin)(qin)(qin)親(qin)(qin)(qin)(qin)子(zi)(zi)(zi)(zi)鑒(jian)(jian)(jian)定(ding)(ding),有(you)的(de)也稱(cheng)為親(qin)(qin)(qin)(qin)子(zi)(zi)(zi)(zi)鑒(jian)(jian)(jian)定(ding)(ding)和單親(qin)(qin)(qin)(qin)鑒(jian)(jian)(jian)定(ding)(ding)。親(qin)(qin)(qin)(qin)子(zi)(zi)(zi)(zi)鑒(jian)(jian)(jian)定(ding)(ding)是指(zhi)被鑒(jian)(jian)(jian)定(ding)(ding)人由爭(zheng)議(yi)父親(qin)(qin)(qin)(qin)、親(qin)(qin)(qin)(qin)生母(mu)(mu)(mu)親(qin)(qin)(qin)(qin)和孩(hai)子(zi)(zi)(zi)(zi)組成(cheng)。母(mu)(mu)(mu)子(zi)(zi)(zi)(zi)之(zhi)間(jian)(jian)的(de)血緣關系(xi)已經確定(ding)(ding)。需(xu)要(yao)認(ren)定(ding)(ding)的(de)是,爭(zheng)議(yi)父親(qin)(qin)(qin)(qin)與(yu)孩(hai)子(zi)(zi)(zi)(zi)之(zhi)間(jian)(jian)是否存在父子(zi)(zi)(zi)(zi)關系(xi)。單親(qin)(qin)(qin)(qin)認(ren)定(ding)(ding)是指(zhi)認(ren)定(ding)(ding)人為爭(zheng)議(yi)父(母(mu)(mu)(mu))子(zi)(zi)(zi)(zi)。此外,還有(you)一種特殊類型的(de)親(qin)(qin)(qin)(qin)子(zi)(zi)(zi)(zi)鑒(jian)(jian)(jian)定(ding)(ding)。父親(qin)(qin)(qin)(qin)和母(mu)(mu)(mu)親(qin)(qin)(qin)(qin)與(yu)孩(hai)子(zi)(zi)(zi)(zi)之(zhi)間(jian)(jian)的(de)關系(xi)是有(you)爭(zheng)議(yi)的(de),需(xu)要(yao)確定(ding)(ding)。參與(yu)鑒(jian)(jian)(jian)定(ding)(ding)的(de)有(you)父親(qin)(qin)(qin)(qin)、母(mu)(mu)(mu)親(qin)(qin)(qin)(qin)、兒子(zi)(zi)(zi)(zi),但由于母(mu)(mu)(mu)親(qin)(qin)(qin)(qin)不是親(qin)(qin)(qin)(qin)生母(mu)(mu)(mu)親(qin)(qin)(qin)(qin),所以(yi)不是典(dian)型的(de)親(qin)(qin)(qin)(qin)子(zi)(zi)(zi)(zi)鑒(jian)(jian)(jian)定(ding)(ding)。這種鑒(jian)(jian)(jian)定(ding)(ding)稱(cheng)為親(qin)(qin)(qin)(qin)子(zi)(zi)(zi)(zi)鑒(jian)(jian)(jian)定(ding)(ding),父母(mu)(mu)(mu)雙方都(dou)有(you)嫌疑,需(xu)要(yao)鑒(jian)(jian)(jian)定(ding)(ding)父親(qin)(qin)(qin)(qin)、母(mu)(mu)(mu)親(qin)(qin)(qin)(qin)和孩(hai)子(zi)(zi)(zi)(zi)之(zhi)間(jian)(jian)的(de)關系(xi)。
對(dui)于(yu)上述不同(tong)(tong)(tong)類(lei)型的(de)親(qin)子(zi)鑒(jian)(jian)(jian)定(ding),其(qi)鑒(jian)(jian)(jian)定(ding)原理和統計(ji)方法(fa)不同(tong)(tong)(tong),檢測(ce)相(xiang)同(tong)(tong)(tong)數量的(de)遺(yi)傳(chuan)標(biao)記(ji)的(de)準確性(xing)也(ye)不同(tong)(tong)(tong)。最(zui)準確的(de)是標(biao)準三胞胎的(de)親(qin)子(zi)鑒(jian)(jian)(jian)定(ding)。一般使用(yong)15個(ge)STR位點,準確率超(chao)過99.999%。可(ke)能(neng)有(you)一個(ge)錯誤(wu)。因此,對(dui)于(yu)后(hou)兩種(zhong)識別類(lei)型,需要(yao)對(dui)更多(duo)的(de)遺(yi)傳(chuan)標(biao)記(ji)進行額外的(de)檢測(ce)。但由于(yu)成本控制(zhi)或實驗(yan)室能(neng)力等原因,很多(duo)鑒(jian)(jian)(jian)定(ding)機構不具備(bei)或無法(fa)檢測(ce)到更多(duo)的(de)基因座,這成為誤(wu)鑒(jian)(jian)(jian)定(ding)的(de)隱患。對(dui)于(yu)這種(zhong)情(qing)況,我們中心一般最(zui)多(duo)檢測(ce)21個(ge)位點,必要(yao)時會增加最(zui)多(duo)39個(ge)位點。我們還使用(yong)其(qi)他類(lei)型的(de)遺(yi)傳(chuan)標(biao)記(ji)檢測(ce)系統,以(yi)確保鑒(jian)(jian)(jian)定(ding)結論準確、科(ke)學(xue)、客觀。
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