共查询到17条相似文献,搜索用时 765 毫秒
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通过对260名(男113人,女147人)信阳农林学院大二学生的眼脸、卷舌、耳垂、美人尖、拇指弯曲、食指长度等8对遗传性状进行调查,结果发现眼睑、耳垂、美人尖、拇指弯曲、食指长度和酒窝6对人类遗传性状隐性基因频率较显性基因频率高,卷舌和双手嵌合的2对遗传性状的显性基因频率较隐性基因频率高。调查群体中女生与男生在眼脸、耳垂、卷舌、美人尖、拇指弯曲、食指长度、和酒窝7对遗传性状中显性和隐性性状出现率之比与女生和男生总人数之比1∶1.3相近。260人中随机抽样调查38人的指纹类型情况结果显示:弓、箕、斗3种指纹出现的比例分别为12.63%,48.68%,38.68%,斗型纹指纹类型人数较多。人均总指嵴数为144.77,男生总指嵴数平均值约为142.59,女生总指嵴数平均值约为146.95。 相似文献
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《激光生物学报》2021,30(1)
对贵州回族、苗族、彝族开展29个Y-STR基因座遗传多态性及群体遗传结构分析,并与其他7个群体进行遗传关系比较研究,探讨其在法医学和群体遗传学中的实际应用价值。应用DNATyperTMY29试剂盒对309名贵州苗族、331名贵州彝族和291名贵州回族无关个体进行检测,统计29个Y-STR基因座的等位基因频率及基因多样性等群体遗传学参数,采用YHRD在线软件进行AMOVA分析。在贵州回族、苗族和彝族3个民族的931个无关个体中观察到816种单倍型,其单倍型多样性分别为0.995 5、0.998 9和0.999 1。基因多样性(GD)值分别为0.289 9~0.874 7、0.252 3~0.915 5和0.316 2~0.947 9,10个人群间的遗传距离在0.007 8~0.138 9。研究表明,这29个Y-STR基因座在贵州回族、苗族和彝族3个人群中有较高的多态性分布。本研究所得数据可为上述人群的法医学和群体遗传学研究提供基础数据支撑。 相似文献
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目的:调查贵州苗族、布依族、侗族人群mtDNA的群体遗传特点。方法:用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术和DNA测序法,对3个民族男性个体mtDNA上12个SNP进行多态性分析。结果:285名个体共检出47种单倍型和12种单倍群。主要单倍型H32、H36、H10在3个民族间频率分布差异有统计学意义(P0.05);3个民族共有单倍型为11种(72.98%)且在民族间频率分布差异有统计学意义(P0.05),单倍群B(21.05%)和M7(21.05%)频率最高,B在苗族、布依族中分布频率与侗族间差异有统计学意义(P0.05)。结论:贵州苗族、布依族、侗族人群mtDNA单倍型分布相似,单倍群频率及主成分分析表现出南方群体特征。侗族母系遗传结构较苗族和布依族更为复杂,民族间存在基因交流的可能。 相似文献
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目的:研究新疆维吾尔族、汉族两民族亚甲基四氢叶酸还原酶(Methyleneterahyofolate reductase MTHFR)基因多态性的分布情况,获取新疆维吾尔族与汉族MTHFR 1298位群体遗传学数据。方法:应用PCR-RFLP技术检测新疆维吾尔族及汉族MTHFR1298位多态性位点基因频率及基因型频率。结果:新疆维吾尔族、汉族MTHFR 1298位C等位基因分布频率分别为12%、23%,P<0.05有统计学差异性,且新疆维吾尔族MTHFR 1298位C等位基因分布频率与现有报道的少数民族贵州苗族、布依族具有统计学差异。结论:MTHFR 1298位多态性在不同民族具有差异性:MTHFR 1298位多态性在新疆维吾尔族和汉族有民族差异;新疆新疆维吾尔族MTHFR 1298位C等位基因频率与贵州苗族、布依族少数民族之间具有民族差异性。 相似文献
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Five characteristics (hair forms,nasal profile,nostril forms,mongoloid fold and upper eyelid fold) were respectively investigated in six nationalities,including the Buyi,Miao,Shui,Maonan,Dong,and Han nationalities in Southern Guizhou,China.The gene frequencies of five characteristics in the six nationalities were estimated and compared.The results indicated that:(1) for hair forms and nasal profile,the frequency of the dominant gene was lower than that of their recessive gene,but the opposite was true for nostril forms.(2) Among different nationalities,the difference of gene frequency of the mongoloid fold,nasal profile,hair forms and upper eyelid fold was quite significant,which was followed by that of nostril forms. 相似文献
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Morphological traits in peoples of Mongolian nationality of the Hulunbuir league,Inner Mongolia,China 总被引:3,自引:0,他引:3
Zheng L Han Z Lu S Li Y Shuyuan L 《Anthropologischer Anzeiger; Bericht über die biologisch-anthropologische Literatur》2002,60(2):175-185
A sample of 947 Mongolians of Bargud, Elute and Buriat was investigated on 9 indexes (hair form, forehead hair-ledge point, eyefold of the upper eyelid, Mongoloid fold, ear lobe type, nasal profile, nostril type, front teeth type, and chin projection) in the Hulunbuir league, Inner Mongolia in September 1997. The results are as follows: 1. Most of the Mongolians in Hulunbuir league are characterised by straight hair, forehead hair-ledge point absence, eyefold eyelid, Mongoloid fold appearance, shovel-shaped front teeth, straight nose, wide nostril, free ear lobe, non-projecting chin. 2. The frequencies of the forehead hair-ledge point appearance, shovel-shaped front teeth appearance and projecting chin showed significant differences between the three groups. 3. The incidence of ear lobe type, nasal profile and front teeth type showed obvious sexual differences. 4. Correlations did not occur between most of the nine traits. 相似文献
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Five characteristics (hair forms, nasal profile, nostril forms, mongoloid fold and upper eyelid fold) were respectively investigated
in six nationalities, including the Buyi, Miao, Shui, Maonan, Dong, and Han nationalities in Southern Guizhou, China. The
gene frequencies of five characteristics in the six nationalities were estimated and compared. The results indicated that:
(1) for hair forms and nasal profile, the frequency of the dominant gene was lower than that of their recessive gene, but
the opposite was true for nostril forms. (2) Among different nationalities, the difference of gene frequency of the mongoloid
fold, nasal profile, hair forms and upper eyelid fold was quite significant, which was followed by that of nostril forms.
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Translated from Hereditas, 2006, 28(4): 399–402 [译自: 遗传] 相似文献
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D Siváková E Weisová M Cvícelová H Walter 《Anthropologischer Anzeiger; Bericht über die biologisch-anthropologische Literatur》1999,57(1):51-60
Eleven anthropometric traits, five indices and eight anthroposcopic and behavioural traits have been studied in the population of Medzev, which is located in the region Spis in South-Eastern Slovakia. An attempt has been made to compare the results of the present study with other population groups in Slovakia, particularly with an ethnogenetically related population from North-Eastern Slovakia (Chmel'nica). Barring zygomatic breadth in males, biogonial breadth in females, biacromial breadth und jugomandibular index in both sexes, hair pigmentation, ear lobe attachment and arm folding, the remaining traits show no significant differences between the Medzev and Chmel'nica population. On the whole, these two populations are closer to each other than to any other Slovakian group. 相似文献
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M K Bhasin A P Shil M B Sharma H Walter H Danker-Hopfe I P Singh V Bhasin V Bhardwaj K Sudhakar D Wadhavan 《Anthropologischer Anzeiger; Bericht über die biologisch-anthropologische Literatur》1987,45(4):351-360
14 population groups of Sikkim (India)--Lepchas (2), Bhutias (2), Sherpas, Tamangs, Gurungs, Mangars, Rais, Limboos/Subbas, Pradhans (Newars), Brahmans, Chhetris, Scheduled Castes--have been studied in regard of the intra- and intergroup variability of colour blindness, ear lobe attachment, mid-phalangeal hair and behavioural traits (tongue folding, hand clapsing, arm folding, leg folding, handedness). Some of these variables show a considerable distribution heterogeneity, which is discussed considering history and marriage patterns of these populations. As most of them are highly endogamous one can assume that this heterogeneity is caused by locally acting factors such as drift and/or founder effects, which could be preserved due to as good as lacking gene flow among the populations under study. Beyond that the Sikkim data are compared briefly with those reported for other Indian and Asiatic populations. 相似文献