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1.
高中生物(试验修订本·必修)第二册第39页.关于连锁和交换定律在实践中的应用,课本上是这样叙述的:有一种叫做指甲髌骨综合症的人类遗传病.这种病是一种显性遗传病,致病基因(NP表示)与ABO血型的基因(IA,IB或i)位于同一条染色体上.在息这类遗传病的家庭中,NP基因与IA基因往往连锁,而NP的正等位基因np与IB基因或i基因连锁,又已知NP和IB之间的重组率为18%.由此可以推测出,患者的后代只要是A型或AB型血型(含IA基因),一般将患指甲髌骨综合症,"不患这种病的可能性只有18%."本人认为此处:"不患这种病的可能性应为只有9%." 相似文献
2.
目的：通过ABO、Rh、MNSs血型系统的遗传学调查分析,了解河北省回族的血型遗传学特征。方法：对河北北方学院2004-2008级河北省籍回族学生158人进行ABO、Rh、MNSs血型系统的基因频率及基因型频率调查、统计,并将调查结果与汉族学生进行比较分析。结果：回族学生红细胞ABO血型系统基因频率IA：0.339 2,IB：0.241 1,i：0.421 0。Rh血型系统单倍型CDE=0.082 2,CDe=0.797 5,cDE=0.107 6,cDe=0.012 7,基因频率C=0.879 7,c=0.120 3,D=1.000 0,d=0,E=0.189 9,e=0.810 1。MNSs血型系统单倍型MS=0.031 6,Ms=0.506 3,NS=0.012 7,Ns=0.449 4 基因频率M=0.537 9,N=0.442 1,S=0.044 3,s=0.955 7。结论：河北省回族红细胞ABO血型基因频率既不同于居住地的汉、满民族,也有别于其它居住区的同一民族。Rh血型系统单倍型基因频率CDe0.797 5最高 未发现Rh阴性。MNSs血型单倍型Ms〉Ns〉MS〉NS 基因频率M〉N s〉S。与国内文献报道吻合。 相似文献
3.
对380名正常汉族学生的指纹与血型进行了相关性研究。经X2检验,四种血型的指纹型分布频率,各手指纹型的频率及左、右对应手指指纹组合格局均有显著差异。不同血型男女间各形指纹频率未见有性别差异。结果提示:指纹与血型之间可能有一定的相关性。 相似文献
4.
孩子的遗传特征 (标记 )是由其父母双方提供的基因组合而成的 ,从受精的那一瞬间就已经决定了 ,检验父母、小孩三者的遗传特征 ,看它是否符合遗传规律 ,从而可进行亲子鉴定。常见的亲子鉴定方法有 :ABO血型检查、DNA指纹分析、STR技术应用。1 用红细胞血型进行亲权排除人的ABO血型是受三个复等位基因控制的 ,i为隐性基因 ,IA、IB 为显性基因。决定ABO血型的基因型有 6种 :IAIA、IAi、IBIB、IBi、IAIB、ii,表现型有 4种 :A型、B型、AB型和O型 ;血型遗传符合孟德尔遗传规律 ,在一个家庭中 ,孩子的血型基因必定来自于父母。但… 相似文献
5.
380例汉族人手指纹与血型的相关性研究 总被引：1，自引：0，他引：1
对380名正常汉族学生的指纹与血型进行了相关性研究。经X^2检验，四种血型的指纹型分布频率，各手指纹型的频率及左、右对应手指指纹组合格局均有显著差异。不同血型男女间各形指纹频率未见有性别差别。结果提示：指纹与血型之间可能有一定的相关性。 相似文献
6.
目的:了解ABO血型频率和基因频率在不同人群中的分布以及血型与疾病的关系.方法:运用玻片法测定血型,统计并计算满、汉、回三民族ABO血型的基因型频率和基因频率.结果:满、汉、回三民族ABO血型的基因型频率和基因频率存在差异.结论:ABO血型抗原在不同地域不同民族中是有差异的. 相似文献
7.
目的:了解ABO血型频率和基因频率在不同人群中的分布以及血型与疾病的关系.方法:运用玻片法测定血型,统计并计算满、汉、回三民族ABO血型的基因型频率和基因频率.结果:满、汉、回三民族ABO血型的基因型频率和基因频率存在差异.结论:ABO血型抗原在不同地域不同民族中是有差异的. 相似文献
8.
目的：探讨β-细胞腺苷三磷酸一敏感性钾通道（potassium inwardly—rectifying channel,subfamilyl,member 11,KCNJ11）基因E23K多态性与湖北汉族人群2型糖尿病的相关性。方法：采用同胞对（家系内对照）和随机病例一对照两种实验设计,利用聚合酶链式反应-限制性片段长度多态性（PCR—RFLP）技术分析湖北地区443例样本KCNJ11基因E23K多态性。并测定身高、体重、腰围、臀围、血压和空腹血糖等生理生化指标。结果：随机病例一对照实验设计中,病例组与对照组的基因型频率与等位基因频率有显著性差异（P〈0．05或P〈0.01）。结论：在湖北汉族人群中,2型糖尿病的发生发展与KCNJ11基因E23K多态性相关联,KCNJ11基因是湖北汉族人的一个2型糖尿病易感基因。 相似文献
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10.
本文对怀化汉族586人的ABO血型分布进行了调查．结果是：血型分布特点是O＞A＞B＞AB，基因频率r=0．6125，P=0．2046，q=0．1829．经x2检验，各血型的观察值与期望值符合Hardy-Weinberg定律, 相似文献
11.
湖南瓦乡人红细胞血型研究 总被引：1，自引：0，他引：1
调查了湖南怀化市沅陵县230名父母均系瓦乡人而彼此无血缘关系学生的ABO、Rhesus、P、MNSs四种红细胞血型系统的血型.结果表明,ABO系统中的基因频率r(0.6325)>p(0.2221)>q(0.1464);MNSs系统中的基因频率m(0.5196)>n(0.4804)、s(0.9848)>S(0.0152)、Ms(0.4902)>Ns(0.4576)>MS(0.0272)>NS(0.0228);Rhesus系统中CCDee表型最常见(57.83%),CDe单倍型频率较高(0.7588),而cDe频率(0.0207)较低;P系统中P1基因频率为0.1391.湖南瓦乡人的红细胞血型分布具有我国南方民族的特点.与云贵高原周边其他8个民族之间的遗传距离比较表明,湖南瓦乡人与湖南土家族的遗传距离最近而和贵州的仡佬族最远. 相似文献
12.
目的 :为了探讨遗传性状与种族差异之间的相关性。方法 :采取统一发表 ,在老师的配合下根据吴汝康等人的“人体测量法”对河北汉、蒙、满三民族共 74 6人的 8对遗传性状进行了调查。结果 :计算出每对性状的出现率和基因频率 ,分析三民族之间的差异 ,并且与我国其它民族进行了比较。结论 :不同种族遗传性状有明显不同 ,在进化过程中不同种群形成了不同的基因库。 相似文献
13.
Objective: To determine whether polymorphisms in the genes for coagulation factor. II, V, VII could predispose an individual
to increase risk for coronary artery disease (CAD) and/or myocardial infarction (MI) in Chinese. Methods: We screened coagulation
factor II(G20210A), V(G1691A), VII (R353Q and HVR4) genotype in 374 patients undergoing coronary angiography by polymerase
chain reaction and restriction fragment length polymorphism (PCR-RFLP) assay. Results: The R353Q and HVR4 gemotype of the
factor VII distribution was in accordance with Hardy-Weinberg equilibrium. The frequencies of FVII genotype or allele did
not show statistically significant differences between CAD group and controls or between male and female. The frequencies
of the Q allele and (RQ+QQ) genotype were significantly higher among the CAD patients without myocardial infarction (MI) history
than among those with MI history (P<0.05). However, HVR4 polymorphism was not significantly different within groups. We only find one normal control of factorII
(G20210A) mutation. No coagulation factor V(G1691A) mutation was found in the CAD patients and controls. Conclusion: The factor
II(G20210A), V(G1691A) mutation is absent and may not be a major genetic factor for CAD and/or MI; the Q allele of the R353
Q polymorphism of the factor VII gene may be a protective genetic factor against myocardial infarction in Chinese.
Project (No. 021103166) supported by a grant from the Key Project of Science and Technology Commission of Zhejiang Province,
China 相似文献
14.
Jun-jie Ye Li Ma Li-juan Yang Jin-huan Wang Yue-li Wang Hai Guo Ning Gong Wen-hui Nie Shu-hua Zhao 《Journal of Zhejiang University. Science. B》2013,14(9):807-815
Objective: There are many reports on associations between spermatogenesis and partial azoospermia factor c (AZFc) deletions as well as duplications; however, results are conflicting, possibly due to differences in methodology and ethnic background. The purpose of this study is to investigate the association of AZFc polymorphisms and male infertility in the Yi ethnic population, residents within Yunnan Province, China. Methods: A total of 224 infertile patients and 153 fertile subjects were selected in the Yi ethnic population. The study was performed by sequence-tagged site plus/minus (STS+/−) analysis followed by gene dosage and gene copy definition analysis. Y haplotypes of 215 cases and 115 controls were defined by 12 binary markers using single nucleotide polymorphism on Y chromosome (Y-SNP) multiplex assays based on single base primer extension technology. Results: The distribution of Y haplotypes was not significantly different between the case and control groups. The frequencies of both gr/gr (7.6% vs. 8.5%) and b2/b3 (6.3% vs. 8.5%) deletions do not show significant differences. Similarly, single nucleotide variant (SNV) analysis shows no significant difference of gene copy definition between the cases and controls. However, the frequency of partial duplications in the infertile group (4.0%) is significantly higher than that in the control group (0.7%). Further, we found a case with sY1206 deletion which had two CDY1 copies but removed half of DAZ genes. Conclusions: Our results show that male infertility is associated with partial AZFc duplications, but neither gr/gr nor b2/b3 deletions, suggesting that partial AZFc duplications rather than deletions are risk factors for male infertility in Chinese-Yi population. 相似文献
15.
傅永春 《内蒙古师范大学学报(哲学社会科学版)》2008,37(5):60-63
以内蒙古参加新课程培训的231名小学教师（男77名,女生154名）为被试,采用成就动机量表（AMS）,调查了小学教师成就动机的状况和发展特点。结果表明：在避免失败上存在显著的性别差异,女教师显著高于男教师;不同年龄阶段的小学教师成就动机水平没有显著差异,但26-30岁是小学教师成就动机由积极到消极的分界点;不同任教学科的教师在避免失败上存在显著差异,语文教师的成就动机水平最高,数学教师的成就动机水平最低;不同职称、学历和教龄的小学教师成就动机水平上均没有显著差异。 相似文献
16.
This study compared two generations of seven high school chemistry texts (1970/1973) and current editions analyzed for gender fairness in illustrations and in concrete analogies. Results support these conclusions: (a) considering the texts as a group, there are significant differences between relative frequencies of named and unnamed illustrations of men and women and no significant differences between relative frequencies of illustrations of boys and girls in seven high school chemistry texts in the 1970 editions compared to current edition of the same texts; (b) a current best-seller is the only text that has achieved balance between male/female illustrations; (c) the other texts overwhelmingly favor pictures of males; (d) most current texts had more analogies than their 1970 editions; the former favored images reflecting girls' interests. 相似文献
17.
INTRODUCTIONCoronaryarterydisease (CAD)continuestobethemajorcauseofmorbidityandmortalityinourcountry .TheactivityofbloodcoagulationfactorshasbeenshowntobeanimportantriskindicatorforCAD .However,circulatinglevelsofcoagulationfactorsmaynotaccuratelyreflectt… 相似文献