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- An example of the plant height for an F2 generation in a cross of barley is used for the demonstration. 以大麦一个杂交组合的F_2代株高资料为例演示了分析过程。
- If the characteristic is governed by simple Mendelian genes, the typical monohybrid and dihybrid ratios become apparent in the F2 generation. 如果其特征取决于单一孟德尔基因，那么典型的单基因杂种和和双基因杂种的遗传比率将在子二代呈现。
- If a homozygous dominant AA is crossed with a homozygous recessive aa, the F2 generation obtained by selfing the F1 would be 25%AA, 50%Aa, and 25%AA. 如果用纯合的显性基因AA与纯合的隐性基因aa杂交后产生的子一代自交（侧交），则可以得到25%25AA，50%25Aa，25%25aa的子二代。
- In other words, the plants selected as the donor plants in F2 generation should be male sterile in LDC and fertile in SDC. 以这种个体作为花药培养的供体亲本，可以大大提高育种效率。
- Segregation happened on F2 generation, the combination which wild beet used as female and sugarbeet used as male represented non Mendelian separation law till F4 generation. 杂种F2产生分离，野生甜菜作母本糖甜菜为父本的杂交组合，表现为非孟德尔式分离，并持续到F4以后。
- This study demonstrated the feasibility of using bulk-based approach coupled with selective genotyping in identifying markers for QTL with moderate effects in the F2 generation. 本研究表明，将分池法与选择基因型分析相结合，可以利用F2代群体定位效应较小的QTL位点。
- Acorrding to choosing better parents and raising the heterosis of all the yield charater, it is suggested that it is feasible to use the F2 generation for exploitation. 因此，若选择优良亲本，注重提高双亲产量性状的平均水平，小麦的杂种优势可以利用F2代。
- As for comprehensive evaluation, the output, feed conversion ratio and survival rate of F2 generation was superior to F1, but the growth was lower than F1. F2代的成活率、饲料系数、养殖产量均高于F1代，但生长速度不如F1代。
- The ratio of resistant and susceptible plants was 1:1 in progenies of backcross of the F1 and susceptible parents, and this ratio was 2.8:1 in the F2 generation from the F1 selfing. 抗性稳定株系与感病亲本杂交，F1表现高抗病，再与感病亲本回交，后代抗感病株比例为1:1，自交F2的比例为2.;8:1。
- The ratios of the sterile plants with the fertile plants in their F1, F2 generations, and their reciprocal backcross generations with the male sterile plants were calculated. 同时，以具有正常细胞质的自交系为母本，育性完全恢复的测交F1植株为父本进行反交，对其反交的F1及F2进行育性观察分析。
- True visionaries are often misunderstood by their own generation. 真正有远见卓识的人往往招致同时代人的误解。
- There is a generation gap between my parents and I. 我父母和我之间有代沟。
- He is a member of beat generation. 他是个颓废派的成员。
- My generation behaves differently from my father's. 我们这一代人的所作所为和我父亲的那一代人不同。
- To people of our generation Kennedy was a god. 对我们这一代人来说，肯尼迪是我们崇拜的偶像。
- They set the fashion for the generation. 他们为这一代树立了一个新风尚。
- Press F2, and then type a new name for the style. 按F2,再键入样式的新名称。
- They set a fashion for the generation. 他们为这一代树立了一个新风尚。
- F2:eum...good,how unique the food is. 外国游客2：嗯，真好吃，多么别具一格的食物啊。
- Many old legends were handed down from generation by mouth. 许多古老的传说都是一代一代口传下来了。
