受精

Fertilization is external, producing free-living planula larva.

体外，自由活动的浮浪幼虫。

In human reproduction,one female egg is usually fertilized by one sperm.

在人体殖过程中,一个子使一个子。

Syngamy - The fusion of egg and sperm cells into a zygote.

Syngamy -融合和子细胞成。

Only one sperm fertilises an egg.

只有一个子使子。

Bees fertilize flowers.

蜜蜂使花。

The male and female pronucleus fused finally.Most hybrids could develop normally.

成熟的雌雄原核形成后完成融合过程，形成合子核，过程结束。

Allogamy Cross-fertilization in plants.

植物中的异体。

This oosperm is you.

这颗就是你。

DIESTRUS in the unspayed female dog. The period of sexual inactivity after the female is receptive.

绝育雌狗的间情期.雌狗易后的性不活跃期.

Homogamy occurs in the closed cleistogamous flowers that appear late in the season in certain plants.

该现象一般出现在具有闭花花的一些特定的植物中。

Sporopore The aerial spore-producing body of certain fungi, e.g. the mushroom of Agaricus.

为苔藓和地钱的孢子体世代具有。由发育而来，包括基足、柄和孢蒴。孢子体是寄在配子体上的。

Autogamy:Self-fertilization in plants.

植物的自身。

Identical twins are also called monozygote twins because they develop from the splitting of a single fertilized egg.

因为是从同一个分裂而来，同双胞胎也被称作单双胞胎。

A paraffin method and a whole ovary stain clearing techique were used to study pseudogamy in Kentucky Bluegrass (Poa pratenesis L.).

本文运用石蜡切片法、整体透明法研究了草地早熟禾的假现象。

Abstract： Aim:To establish the methods of microfertilization and explore the fertilizing potential of mouse sperm obtained from caput epididymidis and cauda epididymidis.

摘 要： 目的:建立显微的方法，并探讨小鼠附睾子在显微注射进入母细胞后的力。

Traditionally, doctors use gestational age, the number of weeks from fertilization to birth, to determine whether a preemie should receive invasive care.

传统上，医们用孕龄，到出的周数来决定极早儿是否接进一步的关注。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种子园理论，是以假定发随机交配和自花而不会成为严重问题为依据的。

4 Turbellarians are monoecious with the reproductive systems adapted for internal fertilization. And the monogenetic flukes (class Monogenea) are mostly ectoparasites of fishes.

涡虫是雌雄同体的，殖系统适于体内。单起源的吸虫（单殖纲）大多是鱼的外寄虫。

Objective To investigate the relationship between the first polar body morphology of oocyte and the zygote morphology in pronucleus stage, embryo quality in cleavage stage.

目的探讨细胞第一极体形态与原核期形态、裂期胚胎质量的关系。