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1.
作者于1996年在内蒙古调查了汉、回、蒙古族5项人类遗传学经典指标(拇指类型、环食指长、扣手、交叉臂、惯用手)。研究结果显示:(1)3个民族间拇指类型、扣手出现率存在显著性差异,交叉臂、惯用手出现率则无显著性差异,环食指长出现率蒙-汉、蒙-回间存在显著性差异;(2)拇指类型、扣手、惯用手出现率无性别间差异,环食指长出现率男女间存在显著性差异;(3)惯用手与扣手、惯用手与交叉臂间存在明显的相互关系,交叉臂与扣手之间则无关;(4)与国外人群比较,3个民族环指长出现率高,交叉臂R型出现率较高,扣手R型出现率较低,惯用手L型出现率高于印度的一些群体。 Abstract:Authors in vestigated 5 general indexes of anthrotogical genetics including pollical type,palmar digital formula,hand clasping,arm folding and handedness in Han,Hui and Mongol nationalities in 1996.The results showed as follows:(1)There were significant differences in the frequency of pollical type and hand clasping in 3 nationalities,but those of arm folding and handedness showed nosignificant difference and the frequencies of palmar digital formula between the Mongol and the Hui revealed significant difference.(2)There were no significant sexual difference in the frequency of pollical type,hand clasping and handedness while the long type (R) of ring finger revealed significant sexual difference.(3)There were obvious correlations between handedness and hand clasping,handedness and arm folding but no relation between arm folding and hand clasping.(4)In comparison with foreign ethnic groups,the 3 nationalities showed higher frequencies of long type (R) of ring finger and right-arm folding but the frequence right-hand clasping revealed slightly lower.The findings showed higher frequence of Left-Handedness than that of Indian population.  相似文献   

2.
海南黎、苗、汉族扣手、交叉臂和惯用手的研究   总被引:26,自引:3,他引:23  
调查了海南居住较为集中的黎、苗、汉族(共3 207人)扣手、交叉臂、惯用手等人类左右不对称行为特征。结果显示:(1)扣手、交手臂、惯用手三型3个民族的出现率均为R>L型,惯用手的R型出现率远较其他两型高,呈高度显著性差异,(P<0.01)。(2)扣手、交叉臂出现率与性别无关。(3)惯用手R型出现率苗族女性明显高于男性,差异显著(P<0.05)。三民族总和出现率为89.06%,是国内外属最低的。(4)扣手与交叉臂、扣手与惯用手,交叉臂与惯用手之间均具有相当明显的相关性。 Abstract:It was investigated that three types of many general indexes of anthrotogical genetics,which include hand-clasping、arm-folding and handedness,just among Li,Miao and Han nationalities in Hainan.There were 3207 people investigated in total.The results showed as follows:(1)The frequency of hand?clasping,arm-folding and handedness is far higher than others(P<0.01).(2) It was proved that there was no signilicant difference between male and female in the frequency of either hand-clasping or arm-floding.(3)It was obvious that the frequency of type R handedness in female of Miao nationality was higher than in male.And the difference was much clear(P<0.05).The total frequency of handedness was about 89.06 percent,which was the lowest rate as far as we known.(4)There was correlation among handedness and hand?clasping,handedness and arm-folding andhand-clasping and arm-folding respectively.  相似文献   

3.
鄂伦春、鄂温克、达斡尔族一侧优势功能特征研究   总被引:27,自引:4,他引:23  
陆舜华  郑连斌  李咏兰  韩在柱 《遗传》2000,22(5):287-291
报道了鄂伦春、鄂温克、达斡尔族7项一侧优势功能特征(扣手、利手、叠臂、叠腿、起步类型、优势足、优势眼)。结果显示,3个民族7项特征的左右型分布规律有较多的相似之处,绝大多数特征与性别无关。鄂温克族和达斡尔族的利手与叠腿、优势足、起步类型间均具明显关联,其腿足特征间的相关程度亦优于手臂特征。鄂伦春族则不然。 Abstract:Authors reported 7 traits of lateral functional dominance including hand clasping,handedness,arm folding,leg folding,stride type,foot preference and eye preference in Oroqen,Ewenki and Daur nationalities.The results showed as follws;(1)Among three nationalities their left and right distributive patterns of the traits had many similarities and there was no relation between most traits and sexes.(2)There were obvious corelations between handedness and leg folding,handedness and foot preference,handedness and stride type in Eweike and Daur nationalities.Compared with the traits of leg-foot with interrelation,the traits of hand-arm had little degree on correlation in Ewenki and Daur.(3)There was correlation between eye preference and hand clasping but no relation between handedness and hand clasping.  相似文献   

4.
湖南汉族、侗族16对遗传性状的调查   总被引:2,自引:0,他引:2  
本文对湖南汉族、侗族的16对遗传性状进行了调查.计算出了每对性状的出现率及除扣手和交叉臂外的14对遗传性状的基因频率,分析了民族间和性别间的差异,同时还分析了惯用手、扣手、交叉臂之间的关系。 Abstract:Sixteen genetic traits were investigated in Han and Dong nationalities of Hunan Province.The frequencies of all the sixteen genetic traits and the gene frequencies of fourteen genetic traits except hand-clasping and arm-folding were calculated.The differences between two nationalities and those between male and female were ana-lyzed.The relations among handedness,hand-clasping and arm-folding were also analyzed.  相似文献   

5.
调查了宁夏回、汉族拇指类型,环食指长、扣手,交叉臂及惯用手等5项人类遗传学经典指标,结果显示:(1)2民族间环食指长百分率有极的差异(P<0.01),拇指类型,扣手,交叉臂及惯用手百分率无显著性差异(P>0.05),(2)拇指类型,扣手,交叉臂及惯用手百分率无性别间差异,男性环指长百分率高于女性,差异显著(P<0.05)。(3)惯用手与扣手,交叉臂之间存在明显的相互关系,交叉臂与扣手之间无关。  相似文献   

6.
采用Slater区分单基因和多基因遗传的计算模式及Smith无偏分析方法对21个家系资料的分析表明:利手、优势足、扣手特征均为常染色体单基因显性遗传,R型为显性性状。虽然环境因素对这类特征的表现也有一定的影响,但遗传因素仍起主要作用。 Abstract:The data of 21 families were analyzed by the method of Slater's calculating model to differentiate between single-gene and multi-gene heredity and by the method of non-deviation analysis.The results showed that the hereditary mode of handedness or preferential foot or hand-clasping is the dominant heredity of single gene of autosome,and the right type of all of them is the dominant character.In a way,although environmental factors affected the phenotypes of these characters,hereditary factors were also the decisive ones.  相似文献   

7.
内蒙古汉、回、蒙古族扣手、交叉臂及惯用手的分析   总被引:2,自引:0,他引:2  
严国义  桂咏新 《遗传》2003,25(1):14-16
利用对数线性模型分析了郑连斌、陆舜华等1996年在内蒙古调查的汉、回、蒙古族的3项人类遗传学指标(扣手、交叉臂、惯用手),得出与其既有相同又有不同的结论。结果显示:(1)扣手与民族、性别都无关;(2)交叉臂与民族不相关,与性别相关;(3)惯用手、民族、性别三者存在三因子效应;(4)惯用手与扣手、惯用手与交叉臂分别存在相关性,而交叉臂与扣手之间相关性不显著。  相似文献   

8.
孙晓东  卫荣华  桑明 《生命科学研究》2012,16(5):417-419,427
报道了湖北医药学院1 498名(男746、女752)汉族大学生的拇指类型、环食指长、手的惯用、手指嵌合、交叉臂共五项人类遗传学经典指标.研究显示:1)拇指类型、环食指长、手指嵌合、交叉臂的分布在男女性别间有显著差异;2)手指嵌合、拇指类型、惯用手、交叉臂、环食指长等性状存在地区间差异;3)惯用手与扣手间存在明显的相互关系.  相似文献   

9.
内蒙古三个民族舌运动类型的遗传学研究   总被引:28,自引:3,他引:25  
调查了内蒙古汉、蒙古、回族舌运动类型(卷舌、翻舌、叠舌、三叶舌与尖舌),共716例。研究结果显示:各种舌运动类型出现率性别间均无显著性差异;卷舌基因分别与叠、翻、尖、三叶舌基因间存在着互相作用关系,卷舌基因对叠舌基因是隐性上位基因,对翻舌、尖舌、三叶舌基因是修饰基因;内蒙古3个民族间卷、叠、尖舌出现率接近。本文首次调查并研究了尖舌性状。尖舌在过去国内外文献中未见报道。 Abstract:The tongue moving types(including tongue rolling,tongue twisting,tongue folding,clover-leaf tongue and pointed tongue)of 716 cases of Han,Mongol and Hui nationalities in Inner Mongolia were investigated.The results showed that no difference in the frequencies of various tongue moving types between male and female and that the frequencies of rolling,folding and pointed tongue were close to each other among the three nationalities of Inner Mongolia.However,some interactions between genes were revealed,that the rolling gene is a recessive epistatic gene to folding gene and a modifier gene to twisting,pointed and clover-leaf gene respectively.The research on pointed tongue in this paper has never been reported in China and abroad.  相似文献   

10.
兴安盟3个民族10对性状的基因频率   总被引:27,自引:3,他引:24  
调查了内蒙古兴安盟汉、蒙古、朝鲜族的10对遗传性状,并计算了各民族每一性状的基因频率,同时也进行了民族间基因频率的比较。比较结果显示:汉族-朝鲜族间差异较大,蒙古族-朝鲜族间次之,汉族-蒙古族间差异较小。 Abstract:Ten genetic traits were investigated in Han,Mongol and Chaoxian nationalities in Xing'an League of Inner Mongolia.The gene frequency of the traits was calculated in each nationality and compared between the nationalities.The result indicated that the difference of gene frequency between Han and Chaoxian nationalities was significant,followed by between Mongol and Chaoxian ones,whileit was relatively insignificant between Han and Mongol ones.  相似文献   

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A review is presented of issues relevant to the definition, measurement, and classification of stimuli, situations, and environments. Problems such as the lack of adequate definitions of concepts, error and bias in measurement procedures, confusion between measurement of a concept and measurement of its behavioral effects, and the lack of agreement among alternative measures are emphasized. It is suggested that concepts be defined in terms of objective characteristics while allowing for the study of the transactional relationship between organism and environment. The work of the ethologists in defining stimuli while studying their relationship to different organismic states and situational contexts is emphasized in this regard. Following Brunswik, it is also suggested that wherever possible there be a representative sampling of variables in natural settings. Note from the editors: From time to time, Human Ecology will publish a review article. Our first in this series is a review by a psychologist of basic definitional and conceptual problems in environmental studies.This paper was prepared while the author was a Visiting Research Fellow at the Educational Testing Service. The support of ETS and my colleagues in the Division of Psychological Studies is gratefully acknowledged. The review was also supported in part by a grant from the Rutgers University Research Council.  相似文献   

13.
2-Dimethylaminomethylene-1-benzosuberone 1 was coupled with diazotized aniline derivatives to afford a series of the hitherto unreported 2-arylazo-1-benzosuberones 3ai. The tautomeric structure and the effect of substituents on the tautomeric form (s) of the products 3ai were discussed. Similar coupling of the enaminone 1 with diazonium salts of heterocyclic amines gave the respective fused azolotriazino-benzosuberones. Some of the newly synthesized compounds showed potent antimicrobial, anti-HCV, antioxidant, antitumor (as topoisomerase I inhibitors), and antimicrobial activities.  相似文献   

14.
The Precautionary Principle is in sharp political focus today because (1) the nature of scientific uncertainty is changing and (2) there is increasing pressure to base governmental action on more “rational” schemes, such as cost-benefit analysis and quantitative risk assessment, the former being an embodiment of ‘rational choice theory’ promoted by the Chicago school of law and economics. The Precautionary Principle has been criticized as being both too vague and too arbitrary to form a basis for rational decision making. The assumption underlying this criticism is that any scheme not based on cost-benefit analysis and risk assessment is both irrational and without secure foundation in either science or economics. This paper contests that view and makes explicit the rational tenets of the Precautionary Principle within an analytical framework as rigorous as uncertainties permit, and one that mirrors democratic values embodied in regulatory, compensatory, and common law. Unlike other formulations that reject risk assessment, this paper argues that risk assessment can be used within the formalism of tradeoff analysis—a more appropriate alternative to traditional cost-benefit analysis and one that satisfies the need for well-grounded public policy decision making. This paper will argue that the precautionary approach is the most appropriate basis for policy, even when large uncertainties do not exist, especially where the fairness of the distributions of costs and benefits of hazardous activities and products are a concern. Furthermore, it will offer an approach to making decisions within an analytic framework, based on equity and justice, to replace the economic paradigm of utilitarian cost-benefit analysis.  相似文献   

15.
We compared the cardiovascular effects evoked in conscious dogs by 1) submaximal exercise; 2) infusion of dobutamine (40 micrograms X kg-1 X min-1); and 3) infusion of a combination of atropine (0.15 mg/kg), norepinephrine (0.19 micrograms X kg-1 X min-1), and epinephrine (0.05 micrograms X kg-1 X min-1). Myocardial O2 demand, as estimated by the double product (heart rate X systolic blood pressure), was similar during all three interventions. Cardiac output and heart rate increased significantly (P less than 0.05) during each of the three interventions. Arteriovenous O2 difference and total body O2 consumption, however, increased only during submaximal exercise. Although myocardial blood flow increased similarly during each of the three interventions, blood flow to skeletal muscle and the tongue increased only during exercise. Exercise and the combined infusion of atropine, norepinephrine, and epinephrine produced similar increases in blood flow to the diaphragm and similar decreases in blood flow to the stomach. These changes in blood flow were associated with appropriate changes in vascular resistance. Additionally, blood flow to the brain, kidney, adrenal glands, liver, and intestine did not change during any of the three interventions. Thus, in dogs, submaximal exercise, infusion of dobutamine, and infusion of a combination of atropine, norepinephrine, and epinephrine to evoke a given level of estimated myocardial O2 consumption produce similar increases in cardiac output, heart rate, and myocardial blood flow. In contrast, the changes in total body O2 consumption, arteriovenous O2 difference, regional blood flow, and regional vascular resistance that occur during each of these three interventions are different.  相似文献   

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Indians, Markets, and Rainforests: Theory, Methods, and Analysis. Ricardo A. Godoy. New York: Columbia University Press, 2001. 274 pp.  相似文献   

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《Journal of lipid research》2017,58(12):2289-2298
This study addresses the question: why do rats get cataracts at 2 years, dogs at 8 years, and whales do not develop cataracts for 200 years? Whale lens lipid phase transitions were compared with the phase transitions of other species that were recalculated. The major phospholipids of the whale lens were sphingolipids, mostly dihydrosphingomyelins with an average molar cholesterol/phospholipid ratio of 10. There was a linear correlation between the percentage of lens sphingolipid and lens lipid hydrocarbon chain order until about 60% sphingolipid. The percentage of lens sphingolipid correlated with the lens lipid phase transition temperature. The lifespan of the bowhead whale was the longest of the species measured and the percentage of whale lens sphingolipid fit well in the correlation between the percentage of lens sphingolipid and lifespan for many species. In conclusion, bowhead whale lens membranes have a high sphingolipid content that confers resistance to oxidation, allowing these lenses to stay clear relatively longer than many other species. The strong correlation between sphingolipid and lifespan may form a basis for future studies, which are needed because correlations do not infer cause. One could hope that if human lenses could be made to have a lipid composition similar to whales, like the bowhead, humans would not develop age-related cataracts for over 100 years.  相似文献   

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