估计PowerPlex Y23配置文件的群体特异性theta值
John S Buckleton1, Taryn O Hall2, Jo-Anne Bright1
1Institute of Environmental Science and Research Limited, Private Bag 92021, Auckland 1142, New Zealand.
Forensic science international. Genetics
|November 23, 2024
概括
这项研究分析了31,011个PPY23档案,发现了在印度和非洲具有特定匹配的罕见单元类型. 匹配概率计算对于以前见过的和未见过的个人资料不同.
科学领域:
- 人口遗传学 人口遗传学
- 法医科学 法医科学
- 人类遗传学 人类遗传学
背景情况:
- PPY23标记物对人口遗传研究和法医应用至关重要.
- 之前的研究已经建立了分析自体简短串联重复 (STR) 数据的方法.
研究的目的:
- 为了分析种群级PPY23遗传特征.
- 为了评估PPY23数据的匹配概率计算.
主要方法:
- 检查了31,011个PPY23在人口,超人口和全球范围内的个人资料.
- 估计用于匹配概率计算中的theta (θ) 的FST值.
- 使用FST和布伦纳卡帕 (κ) 方法对匹配概率估计的比较.
主要成果:
- 大多数PPY23单质类型是独一无二的,只有少数具有更高的频率.
- 在德里,印度和布基纳法索确定了匹配PPY23个人资料的集群,在非洲裔美国人中还有一个额外的匹配.
- 对以前未见过的个人资料的匹配概率估计是相似的,但在数据集中先前观察到的个人资料上有所不同.
结论:
- 在不同种群中,PPY23单元型的分布有很大差异.
- 计算匹配概率的方法需要考虑是否先前观察过某个配置文件.
- 这些发现对法医DNA分析和人口遗传研究有影响.
相关概念视频
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A balanced wye-to-delta circuit comprises balanced Y-connected voltage sources and delta-connected loads with no neutral line connection.
The initial step in analyzing a wye-to-delta circuit is to assume a positive phase sequence. These phase voltages are then utilized to calculate the line voltages that occur directly across the delta-connected load impedances. Van, Vbn, and Vcn are the phase voltages in wye, and Vab, Vbc, and Vca are the line voltages for a delta circuit. The relation between...
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01:15Power in a Three-Phase Circuit
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Three-phase systems have two configurations: the wye and delta. A star configuration can be three or four wires; in a delta configuration, the components are connected in a closed loop. Instantaneous power refers to the power value at a precise moment, and in a balanced three-phase system, it is constant. This is because the sum of the instantaneous powers in the three phases remains steady over time, despite individual fluctuations, due to the symmetry and phase relationship. The total...
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