Analysis of Trio Half Sibling Testing

Autor: Hai-xia LI, Hui CHEN, Ran LI, Yu ZANG, Hong-yu SUN
Jazyk: čínština
Rok vydání: 2023
Předmět:
Zdroj: Fayixue Zazhi, Vol 39, Iss 3, Pp 254-261 (2023)
Druh dokumentu: article
ISSN: 1004-5619
DOI: 10.12116/j.issn.1004-5619.2021.511202
Popis: Objective To establish an analytical method for half sibling testing involving common three relatives’ participation. Methods Based on the half sibling testing scenarios with the known biological mother, grandfather or uncle, and two unidentified controversial half siblings participating, two opposing hypotheses were set. Lineage reconstruction according to Mendel’s law of heredity was carried out, and the calculation formula of the half sibling kinship index was derived. Verification of actual cases was carried out and the results were compared with duo half sibling testing. Results In the scenarios of the known biological mother, grandfather and uncle participating in half sibling testing, the kinship calculation formulae of 54, 91 and 99 genotype combinations for kinship index calculation were deduced respectively. The actual cases showed higher kinship indexes in trio half sibling testing compared with duo half sibling testing. Conclusion It is beneficial to obtain more genetic information for family reconstruction and improvement of the strength of genetic evidence for half sibling testing by adding known relatives.
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