有性生殖的

The necessity to repair genetic damage is one of the leading theories explaining the origin of sexual reproduction.

需要修复遗传损伤是解释有性生殖起源的一个最主要的推测。

First are those individuals or couples who lack the gametes needed for sexual reproduction.

首先是那些缺少有性生殖所必须的配子的个人和夫妻。

Here we report the simulation of populations with sexual reproduction, mutation and dispersal.

本期Nature介绍了中性理论的一种新形式，增添了将有性生殖、突变和扩散等因素考虑在内的内容。

Assortative mating Sexual reproduction in which the pairing of male and female is not random.

选型交配：有性生殖中配对的雌雄双方不足随机交配的现象。

Nevertheless, it has recently been shown in experiments with Chlamydomonas algae that sex can remove the speed limit on evolution.

然而，最近以衣藻为材料的实验表明，有性生殖可以移除对进化的速度限制。

As a sexual reproductive organ, ovules have received much attention by botanists. Since the nineteenth century, the morphology, structure, ontogenesis, origin and molecular biology of angiosperm ovules have been studied in detail.

胚珠作为被子植物的有性生殖器官一直为植物学家所关注。19世纪以来，人们从形态结构、发生发育、起源及分子生物学等方面对胚珠进行了大量的研究。

However, the growth of rotifer fed on high-density Chlorella pyrenoidosa was inhibited notably, and there was no effect on its fecundity. Sexual reproduction of Brachionus urceus was not promoted by improving the density of diet.

结论］低食物浓度下，轮虫生命周期缩短、繁殖力降低；食物浓度过高，能抑制轮虫生长，但对繁殖力影响不大；提高食物浓度，对壶状臂尾轮虫的有性生殖没有明显的促进作用。

PCD during sexual reproduction in plants is a universal phenomenon in the development of plants. The degeneration of some cells in the procreating apparatus is very important for the sexual reproduction.

PCD是植物发育过程中的一种普遍现象，植物生殖器官中一些细胞的死亡对植物有性生殖具有重要作用。

The formation of such a conjugation pair may be concerned with selfing; the sexual process may be a primitive type of sexual reproduction.

这种接合对的出现可能与自接型有关，其有性过程可能是一种原始的有性生殖类型。

Forests, the survival rate and space-occupying ability of both ramets and sexual seedlings were relatively high, with

和有性生殖幼苗存活率均较高，占据空间的能力较强，但克隆苗在数量和占据空间的能力上占较大优势

This paper demonstrated the impact on the environment today, an important factor is Education.

本文主要展示了当今影响环境的一个重要因素——教育。

Article 16 The power to interpret these Procedures shall remain with the Ministry of Agriculture and CAA.

第十六条本程序由农业部、国家认证认可监督管理委员会负责解释。