雌雄

The results showed that different colour of male parent has no significant difference effect on feather autosexing accuracy rate of filial generation, while different colour of female parent has significant difference effect.

其中，不同羽色类型的公鸡与白羽中有大量红锈羽的母鸡交配，后代雏鸡自别雌雄准确率最低（79.3％）；不同羽色类型公鸡与纯白羽的母本交配，后代雏鸡羽色自别雌雄准确率最高（93.6％）。

Third, growth differences between females and males were analyzed, and sexspecific DNA fragments were attempted to screen by 120 RAPD primer amplification in the gonochoristic offspring.

三是在分析银鲫雌雄个体生长差异的基础上，采用RAPD引物对同一繁育组合中的雌雄个体进行扩增，试图寻找性别特异片段。

Intermedius were decreased from 44.55% to 9.59% in female and from 41.17% to 1.83% in male at different stages. The comparative quantities of MYP expression in the gonads of the hybrids were decreased from 37.66% to 19.22% in female and from 36.66% to 12.55% in male at different stages.

在分析的生殖腺4个发育期中，中间球海胆雌雄个体MYP基因的表达量（以18S rRNA为参照）分别从44.55%和41.17%下降到9.59%和1.83%；杂交海胆的雌雄个体分别从37.66%和36.66%下降到19.22%和12.55%。

Vincent Amazon parrots are what are known as sexually monomorphic, it is impossible to tell males from females just by looking at them.

因为圣文森特亚马逊鹦鹉属于我们所知的雌雄同形的鸟类，所以很难从外表区分雌雄。

2Some specific nucleoside acid bands were amplified from genomic DNA of male and female plants with RAPD technique, indicating that some gene marks related to sexes of Pistacia Vera were found. RAPD signal is an reliable, accurate identifying technique on sexidentification of Pistacia Vera.

2利用RAPD手段对阿月浑子雌雄株基因组DNA扩增后找出性别之间差异性的核苷酸片段，即找到部分与阿月浑子性别相关的基因标记，从而快速而有效地鉴别雌雄株，差异显著。

The difference of male and female Pistacia Vera were compared and analyzed through treating with chemical reagent, surveying the morphology, RAPD techniques, analyzing the chromosome and comparing the band pattern of isoenzyme. The following results and conclusions were drawn:The leaves of male and female Pistacia Vera were treated respectively with chemical reagent. The sexes were identified quickly and efficiently through different color and precipitate reaction among them. The difference is significant.

本文采用化学药剂处理、形态学观察、RAPD技术、染色体压片分析及同工酶谱带分析等方法分别进行了阿月浑子的雌、雄株差异性比较分析，得出如下结论：(1)采用化学药剂分别处理阿月浑子雌雄株叶部提取液，通过不同的颜色反应和沉淀反应可以快速而有效地鉴别雌雄株，并且差异显著。

Results There were a lot significant differences in mice between sexes and ages. There are significant differences on the seroenzyme activity of the p21(superscript HBsAg/HbsAg)、p21(superscript HBX/HBX) transgenic mice and Wild-types.

结果 p21(上标 HBsAg/HBsAg)和p21(上标 HBsAg/HBsAg)转基因小鼠不同年龄、不同的指标雌雄之间差异显著，并且随着年龄的变化，雌雄之间的变化规律不同。

The leaf area, single leaf fresh weight, flavone content and lactone content in good variety were 2.04, 2.71, 2.05 and 2.17 times of those in common variety respectively. There were no obvious difference between the female and staminiferous plants in leaf output character, flavone content and lactone content, which proved that there were hereditary change among the gingko variety in leaf output character, flavone content and lactune content.

较好品种的叶面积、叶重、叶黄酮、内酯含量分别是较弱品种的2.04、2.71、2.05和2.17倍；雌雄株间叶产量性状、黄酮含量、内酯含量无差异，证明银杏品种或类型间叶产量性状、黄酮、内酯含量均存在遗传变异，这种变异与雌雄株无关。

The calling and copulation behaviour of Ancylis sativa Liu had a dielperiodicity.The female moths began to calling at the first day and increasedto 100% at the second day,then the percentage of calling decreasedgradually from the third day to the fifth day,only 16.7% of females showingcalling behaviour at the sixth day.The effect of environmentaltemperature on calling behaviour of Ancylis sativa Liu was studied duringadult life at 16℃,21℃,26℃ and 31℃.The result showed differenttemperature during adult life affected significantly the calling behaviour ofvirgin females.There was considerable variability in the calling patternsamong the different temperature groups,the higher the temperature was,thelater females called,the shorter the calling behaviour lasted.The copulationbehaviour of Ancylis sativa Liu can be divided into following squence:female calling,male responsing,male approaching female,hairpencil displayingand copulating.

枣粘虫求偶和交配行为研究结果表明，在光周期为14L：10D、温度为21℃下，越冬代枣粘虫雌蛾的求偶高峰期为黑暗期6.0-8.0小时，求偶活动以羽化后1-3天表现强烈，第二天求偶百分率高达100％，第4天开始，求偶百分率下降，到第6天仅为16.7％；环境温度对枣粘虫雌蛾的求偶活动有明显的影响，随着温度的下降，求偶高峰期明显提前，求偶高峰期的持续时间变长，在21、26、31℃下，求偶百分率接近或达到100％，在16℃下，仅为43％；枣粘虫的交配行为可分为雌蛾求偶、雄蛾反应、雄蛾接近雌蛾、打开味刷及交配成功等阶段；交配活动也以羽化后前3天表现强烈；第1、2代在黑暗周期中的交配高峰期比越冬代推后1-2.5小时；越冬代枣粘虫的交尾持续时间多为3-4小时，第1、2代比越冬代短；越冬代交尾前期多为2-3天，第1、2代多为1-2天，少数羽化当天便可交尾；雌雄成虫均有多次交尾习性，雄蛾最高交尾6次，平均3.3次，雌蛾最多交尾3次，平均1.5次，在田间自然条件下，大多数越冬代雌雄成虫只交尾1次，第1、2代交尾次数有所增高，第1、2代成虫交配率明显高于越冬代。

Japonica and the dark-adapted time would have some effects on the values of ERG of the compound eye of P. japonica. In the same conditions, the ERG value of the male adult was larger than the female;the ERG value of the adult on night was larger than the one in day;the ERG value would increase with the dark-adapted time and made stability in end.

白天和夜晚暗适应一定时间，在相同的相对光强度下，雄成虫的ERG值大于雌成虫；暗适应一定时间，在相同的相对光强度下，雌雄成虫的ERG值均为夜晚高于白天；无论是在白天还是在夜晚，雌雄成虫的ERG值均随暗适应时间的延长而增加，并最后达一平台。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。