back cross

The experiments of cross and back cross showed that these mutations were belonged to recessive mutation of nucleus gene and controlled by a recessive monogene.

通过正反交试验表明，大豆叶绿素缺失突变属于核基因隐性突变，而且是由一隐性单基因所控制的。

The bolting time character is a quantitative trait controlled by multiple genes. There is a most effective major gene, so the single cross or back cross can be used in breeding for premature bolting tolerance. 2.

结球甘蓝抽薹时间性状是受多基因控制的数量性状，存在效应大的主基因，在进行耐抽薹育种中可采用单交重组或简单回交转育的方法进行。

We design a chromosome structure suitable to describe the delivery route, construct a specific cross operator and a variable operator, and propose a put-back random duplicate operator and suitable-degree function.

阐述放回式随机复制算子和适应度函数，设计描述行驶线路的染色体结构、初始群体生成方法、独特的交叉算子和交换变异算子，构造完整的遗传算法。

In order to analysis the genetic characteristic of male sterility, test cross, sister cross, back cross, reciprocal cross and self pollination were conducted with these male sterile plants.

通过正交和反交对不育株的所属类型进行分析，结合自交、回交分析其遗传特点。

EXPERIENCE IN REPRODUCTION OF NUDE MICE BY HETEROZYGOTE Method To design the genetic experiment by means of sib mating and back cross mating.

用半裸鼠（交配）繁殖裸鼠的实践经验方法采用同胞交配、回交等繁殖方法做遗传实验。

The compatibility of this cross was also present in the F_2, and back cross generations.

该组合的亲和性在F2及回交世代中仍可表现。

In this study 6 cross and 9 back cross combination were made between semi wild soybeans and cultivated soybean.

对6个栽培大豆与半野生大豆杂交组合及9个回交组合进行了分析。

Regression Analysis of Carcass Meat Yield Using Back Cross Section Indicators as Parameters in Luxi Yellow Cattle

鲁西黄牛背截面指标为参数的胴体产肉率回归分析

Effect of Water Stress on Biomass Accumulation, Distribution and Yield Character After Heading Stage of Rice Back Cross Descendant

花后水分亏缺对水稻回交后代干物质积累与分配及产量性状的影响

The police came back and cross-questioned Des again.

警察回来重新盘问德斯。

The straps cross over at the back and are tied at the waist.

带子在背后交叉，然后系在腰部。

Today we cross the Rubicon . There is no going back.

今天我们要破釜沉舟，背水一战了。

Excellent sanda athlete specialty fist technique is mainly to strike, whipped boxing is given priority to, great consistence with author give priority to. Wrestling to meet his leg, descend fall, hold chest mix leg, cross back fall primarily.

优秀散打运动员特长技法主要是拳法以冲拳、损拳为主，腿法以鞭腿为主，摔法以接腿摔、下潜摔、抱胸拌腿摔、过背摔为主。

The lysine content and the SSR profile of a back cross population was analyzed, and the reliability was proved.

通过对回交家系赖氨酸分析和SSR分子标记检测结果，对该技术的可靠性进行了验证；