指间区纹的遗传学研究Ⅱ.指间区纹的镶嵌显性遗传

人类学学报 ›› 2001, Vol. 20 ›› Issue (02): 144-150.

指间区纹的遗传学研究Ⅱ.指间区纹的镶嵌显性遗传

李辉,卢大儒,金力

出版日期:2001-06-15 发布日期:2001-06-15

Genetics study of interdigital patternsⅡ. Mosaic dominant inheritance of interdigital petterns

LI Hui , LU Da-ru , JIN Li

Online:2001-06-15 Published:2001-06-15

摘要/Abstract

摘要： 10 1个核心家庭的指间区纹分布状况经分析发现Ⅲ、Ⅳ区 ,左右手控制花纹的基因都是等位的。Ⅲ、Ⅳ区是等位的不同基因的镶嵌显性遗传。一个基因同时控制左右手对应区 ,不同基因表达的左右对称度不一。复等位基因中有 6种是完全显性的 ,另发现一种不完全显性。这是指区间区纹的主基因 ,还极少地存在着一种隐性的Ⅲ区纹基因。在随机人群中计算出了这些基因的频率。这一遗传模型可有亲子鉴定佐证等应用。

关键词: 指间区纹; 左右不对称; 镶嵌显性; 家系分析; 复等位基因; 主基因遗传; 基因频率

Abstract: Interdigital pattern distribution in 101 nuclear families is analyzed, and the genes of this phenotype controlling either Ⅲ or Ⅳ area, right or left hand are all on the same locus. Genes controlling Ⅲ or Ⅳ area is mosaic dominant. One gene controls a couple of corresponding areas on both right and left hands. Different genes' phenotypes have different asymmetric degrees. There are 6 kinds of perfectible dominant genes and one inperfectible dominant gene. This is interdigital pattern' s major gene locus. There also finds a Ⅲ pattern' s recessive gene very occasionally. These genes' frequen- cies in random population are calculated. This heredity mode can be applied to parentage identification etc.

Key words: Interdigital patterns; Left-right asymmetry; Mosaic dominance; Pedigree analysis; Major gene inheritance; Gene frequencies

李辉,卢大儒,金力. 指间区纹的遗传学研究Ⅱ.指间区纹的镶嵌显性遗传[J]. 人类学学报, 2001, 20(02): 144-150.

LI Hui , LU Da-ru , JIN Li. Genetics study of interdigital patternsⅡ. Mosaic dominant inheritance of interdigital petterns[J]. Acta Anthropologica Sinica, 2001, 20(02): 144-150.