純合性 的英文怎麼說
中文拼音 [chúngěxìng]
純合性
英文
homozygosity (在一定位點上具有一對相同等位基因的情況)-
F1 females could be backcrossed to the male homozygous recessive parent.
也可用雌性F1與隱性純合雄性親本回交。F1 females could be backcrossed to the male homozygous recessive parent
也可用雌性f1與隱性純合雄性親本回交。The result of such combined effects of the genetic system and the environment is strong homozygosity of the biotypes found by the author.
遺傳系統和環境的這種聯合效應的結果,使作者看到了生物型的強純合性。Chapter 3 erected the relationship between refraction error and cornel ablation depth in theory. the paper proposed various mathematical models which can be used for proceed the simple myopia, simple hypermetropia, compund myopia astigmatism, compund hypermetropia astigmatism, simple myopia astigmatism, simple hypermetropia astigmatism, mixed astigmatism. the influence of the astigmatic axis and the degree of astigmatism on the correction field is discussed. wavefront aberration guided excimer laser cornea ablation is a main method of customised corneal ablation
以數學的方法研究出了屈光性單純近視、屈光性單純遠視、復性近視散光、復性遠視散光、單純近視散光、單純遠視散光、混合性散光屈光矯正的物理模型;並揭示了不同軸位的轉換規律,對不同散光情況下的初始角膜兩個不同方向的曲率半徑和手術后最終的曲率半徑作了定量的研究。Dairy company whose products include yogurt, cottage cheese, dips, sour cream and salsa
-綜合性乳品企業,產品有純奶酸奶和風味三大系列。Most plants carry a large "genetic load" for deleterious recessive genes of which a few are homozygous and depress growth.
多數植物帶有大量有害的隱性基因的「遺傳負荷」,其中少數是純合的,因而降低了生長。Complex vertebral malformation ( cvm ), a lethal autosomal recessive inherited defect in holstein breed, was newly reported in demark
摘要荷斯坦奶牛脊柱畸形綜合征是近年新發現的一種常染色體隱性遺傳病,該病對純合子胎兒是致死性的。We launched an integrated designing experiment to isolate, purify and identify a protein from a tissue, we also set up a designing experiment isolating - globin from serum
開設蛋白質分離、純化、鑒定的綜合性實驗,並開設了設計性實驗從血清中初步分離-環蛋白,由學生自己查找原理和方法、自己設計實驗步驟、自己動手實施,並且用獲得的樣品進行精細分離和鑒定。An allele that, in a heterozygote, prevents the expression of another ( recessive ) allele at the same locus
雜合體生物與顯性純合體生物具有相同的表現型。Usually the more unlike the parents are the more hybrid vigor is released, but the effect diminishes in subsequent generations as more recessive homozygotes reappear
通常,親本越不相似,產生的雜種優勢越強,但這種優勢使下一代的隱性純合子的出現機率更多。Methods : ( 1 ) the segregation of foreign target gene in the t1 by histochmical gus assays ; ( 2 ) identification of pure line from transgenic tomatoes ( tl ) through examining gus expression in pollens in conjunction with pcr analysis of marker gene ( npt ) ; ( 3 ) the transcript levels of leetrl or leetr2 in anti - sense transgenic plants ; ( 4 ) the phenotypes of the transgenic plants in tomato during whole life cycle under ethylene - treated and non - treated conditions
本研究以反義乙烯受體leetr1 , leetr2基因番茄t _ 0代種子為實驗材料,利用gus基因表達研究外源基因的遺傳規律,並藉助于pcr技術對目的和標記基因的鑒定獲得轉基因t _ 1代材料。利用gus基因在t1花粉中的表達鑒定獲得轉基因純合植株。研究了轉基因後代的生長發育模式、對外源乙烯敏感性,以及靶基因的表達特性,初步探明了它們在乙烯受體系統中的功能。Homogenous lines can be obtained in a very short time by haploidy breeding method such as microspore culture and anther culture
摘要通過單倍體育種途徑可快速獲得純合材料,增加有益性狀的選擇幾率,加快育種進程。Of the 21 patients conservatively treated between 1975 and 1997, 12 had diffuse disease ( homozygous mutant alleles ) and 9 had presumed focal disease ( paternal mutant allele only )
1975年至1997年期間接受保守治療的21例患者中, 12例為彌漫性病變(等位基因突變純合子) , 9例為局灶性病變(僅父系等位基因突變) 。Inbreeding increases homozygosity so that deleterious recessive genes are expressed more often in the phenotype, and decreases heterozygosity and hence the potential genetic varability of the population
近親交配使純合體幾率增加,因此,一些有害的隱性基因可以被表達。Made of compound refractory with high purification and binder free from phosphor. used for slag line and weak section of eaf, strong adhesion, high binding strength at high temperature, erosion resistant, long service life
採用高純合成材料和無磷結合劑生產的高性能噴補料,適用於各種電爐的渣線及熱點部位的噴補維護.具有附著率高,高溫結合強度好,抗沖刷性能優異,使用壽命長的優點In order to select male nucleo - sterile new genotype, a tentative idea was put forward for the nucleo - male sterility to attach a tps ( thermo - photoperiod sensitivity ) and a selection strategy of combination of selection and identification, at the same time, the spring and summer sowing method were used to provide different environment conditions of appraising sterility and tps. the results indicated that ( 1 ) sterility could be appraised under the spring sowing environment and tps could be appraised under summer sowing environment. ( 2 ) under spring sowing environment, sterility could be selected, but not maintained. thereby, lines selected could only be selected as recorded selection method in the experiment. ( 3 ) and then, selection was carried out from spring sowing line selected into summer sowing in same line with tps to select plants. these plants through the intercrossing selection had been combined with sterility and tps. in this way, a new selection protocol for selection sterile line with tps was formed. it mainly involves the spring and summer sowing method, recorded selection method and the intercrossing selection method
為了選育新類型玉米雄性核不育系,提出了為玉米核不育性添加溫光敏感性的設想和選擇與鑒定相結合的策略,同時應用分期播種的方法為作物提供不同的生長和發育的環境條件,以鑒定玉米雄穗的育性變化和對不同環境條件溫光的反應.研究結果表明,春播環境下可鑒定和選擇玉米的不育性,夏播環境下可鑒定和選擇其溫光敏感性.針對玉米核不育性難以找到保持系的特性,結合兩種播期選擇兩種性狀.但春播環境下選擇的不育性群體難以通過選擇單株來保持其不育性,為記錄性群體選擇.通過從春播入選的雜合不育性優良株系群體轉移到其對應的夏播溫光敏感性入選的同一優良群體中進行優良單株選擇,能逐漸使不育性和溫光敏感性相結合而選育出純合溫光敏不育系.這種新的選擇程序主要包括應用分期播種法、記錄性選擇法和春夏兩季交叉式選擇法,使含有不育基因的可育株系逐步累積不育基因並增加了溫光敏感性而育成玉米溫光敏不育系As starter cultures, twelve strains of bacillus were screened for the manufacture of long - ripened douchiba from 40 strains isolated from naturally fermented douchiba samples at consecutive stages from qianxi and dafang of guizhou province, through comprehensive evaluation including extracellular proteolytic activity and lipidolytic activity, salt tolerance, ultraviolet light resistance, and antibiotic sensitivity
摘要從貴州黔西和大方兩地傳統陳窖豆豉粑不同工藝階段分離到的40株菌株,經胞外蛋白質和脂肪水解酶活力、耐鹽性能、抗紫外光照射和抗生素敏感性等綜合性能評價,篩選到12株芽胞桿菌可作為陳窖豆豉粑純菌發酵的選擇菌株。The kind of mating, using as one parent a known homozygous recessive, is called a testcross.
這種雜交即利用一個已知的純合的隱性作為一個親本的雜交,稱為測交。Sickle cell anemia represents patients who are homozygous for hemoglobin s ( i. e. hemoglobin ss )
鐮狀細胞性貧血是指血紅蛋白s為純合子的患者(如血紅蛋白ss ) 。Most plants carry a large " genetic load " for deleterious recessive genes of which a few are homozygous and depress growth
多數植物帶有大量有害的隱性基因的「遺傳負荷」 ,其中少數是純合的,因而降低了生長。分享友人