纯合子的

Homozygosity is obtained by inbreeding, and homozygous populations may be well adapted to a certain environment, but slow to adapt to changing environments.

纯合子来自近亲交配，它可能对某种特定的环境有适应性，然而对于变化的环境来说，纯合子的适应力比较低。

Mouse models of this genetic defect have been unsatisfactory because homozygote null animals die early in development and heterozygotes do not exhibit a cardiac phenotype.

这种遗传缺陷的小鼠模型并不能令人满意，因为纯合子缺陷动物在发育早期就会死亡，而杂合子又不能显示心脏表型。

The results indicate that white feather of White Leghorn chicken and black feather of Shou-Guang chicken are complete dominance heredity to hemp feather of Tibetan chicken. Hemp feather is determinate by two or more than two alleles. Only these two or above two alleles is of concurrence, then hemp feather displays possibly. Id/id allele decided shank color is of sex-linkage inheritance, recessive gene id homozygote has process which expresses gradually. We confirm that genotype of shank color in White Leghorn chicken in this paper is the dominant homozygote.

结果表明，白来航鸡的白羽和寿光鸡的黑羽对藏鸡麻羽的遗传方式是完全显性遗传；麻羽是由两个或两个以上的等位基因决定的，只有同时存在这两个或两个以上的等位基因，才可能表现出麻羽来；决定胫色性状的Id/id基因为伴性遗传，隐性基因id在纯合子时有个逐步表达的过程；本研究证实了所用白来航公鸡胫色性状的基因型为显性纯合子。

Feather color and shank color performance and separated proportion of F1 and F2 were observed. The results indicate that white feather of White Leghorn chicken and black feather of Shou-Guang chicken are complete dominance heredity to hemp feather of Tibetan chicken. Hemp feather is determinate by two or more than two alleles. Only these two or above two alleles is of concurrence, then hemp feather displays possibly. Id/id allele decided shank color is of sex-linkage inheritance, recessive gene id homozygote has process which expresses gradually. We confirm that genotype of shank color in White Leghorn chicken in this paper is the dominant homozygote.

结果表明，白来航鸡的白羽和寿光鸡的黑羽对藏鸡麻羽的遗传方式是完全显性遗传；麻羽是由两个或两个以上的等位基因决定的，只有同时存在这两个或两个以上的等位基因，才可能表现出麻羽来；决定胫色性状的Id/id基因为伴性遗传，隐性基因id在纯合子时有个逐步表达的过程；本研究证实了所用白来航公鸡胫色性状的基因型为显性纯合子。

Result: Contrary to European and American people, I allele frequency of Han nationality is higher than that of D allele (P.05); II genotype frequency and DD genotype frequency are noticeably different from that of European and American people (P.01); No DD genotype appear in the excellent athletes, which is noticeably lower than that of control group and athlete group (P.05) and that of the excellent athletes reported in other countries; the frequency distribution of II genotype in Marathon is noticeably higher than that in 5km distance running(P.10); The changing of I allele Jl genotype IP ID genotype frequency indicates a stronger unary liner relation (r=0.9985) with the running distance lengthening(5ktru lOkrru Marathon).

结果显示：与欧美人群相反，汉族I等位基因频率高于D等位基因（P＜0.05）；汉族II型纯合子频率和DD型纯合子频率非常显著地区别于欧美人群（P＜0.01）；在优秀运动员中，DD型纯合子未出现一例，显著低于对照组和运动员（P＜0.05），也显著低于国外已报道的优秀运动员；马拉松项目II型频率分布显著高于5km（P＜0.10）；I等位基因、II基因型和ID基因型的频率变化伴随专项距离（5km、10km、马拉松）的增加呈现强相关的一元线性关系（r=0.9985）。

Among 13 DRB1 alleles detected in Drung ethnic, a unique feature of its allele distribution is having predominant homozygotes (64.9%) in all studied populations. In Drung HLA-DRB1〓14011 is highly prevalently presented with the allelic frequency of 70.07%.

独龙族中检出13种等位基因，其遗传学显著特点是纯合子类型检出较多，纯合子36个，占被检样品的64.9％，DRB1*14011分布占绝对优势，占被检出等位基因的70.07％。

Results The vaccinal vestige, BCO immunization and familial traits were the risk factors of tuberculosis. Frequency of wildness, mutant heterozygote and homozygote of MBP-54 was difference in cases and controls.

MBP-54位点野生型、突变型杂合子、突变型纯合子3种基因型在病例组和对照组中的分布频率不同。

An organism homozygous at every locus produces offspring identical to itself on selfing or when crossed with a genetically identical organism.

纯合子生物如果自交或与和它相同的纯合子结合，产生的后代还是与亲本相同的纯合子。

The functional allele at the W locus is Ipmyb2, which was newly found in Chinese populations, and it differs mainly in the intron regions from those of the reported allele Ipmyb1; in comparison to Ipmyb2, the newly found second allele ipmyb2 has eight substitutions in the exons, a 6-bp deletion, and a 19-bp deletion, causing ORF shifting, and exists mostly in white-flowered individuals.

以上结果表明：1花青素代谢途径上酶基因的位点均有一定程度的多态，其中尤以ANS为最高；调控基因ipmyb2的核苷酸缺失造成该基因停止功能，使其纯合子的个体开白色花。2授粉者所介导的花色表型选择确实在中国种群中发生，有可能进一步增加花色代谢途径上基因位点的遗传变异。

Methods:The difference of PTH gene and protein expression in parathyroid gland and thymus were compared between PTH knock-out mice 1αase knock-out mice and their wild-type littermates at 2 weeks of ages by RT-PCR,real-time PCR and immunohistohemistry.

real-time PCR和免疫组织化学的方法比较分析同窝2周龄PTH基因敲除纯合子和野生型小鼠以及1-α羟化酶基因敲除纯合子[1αase-/-]和野生型小鼠的甲状旁腺和胸腺的PTH表达差异？

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。