Youzhan 8, selected from a natural mutation of variety Aojinzhan by Rice Research Institute of GXAAS, is a fine grain quality inbred variety of indica type.
油占8号是广西农科院水稻所从“澳粳占”自然变异植株中选育而成的优质常规稻新品种。
But the new evidence that humans have adapted rapidly and extensively suggests that natural selection must have other options for changing a trait besides waiting for the right mutation to show up.
但人类能够全面并且快速适应新环境，这个新发现的证据说明自然选择要想改变某一特征可能不必等待正确的变异发生，而是还有其它选择。
Genetic algorithms mimic Darwinian natural selection, where "fitness" selects individuals for survival, breeding, and, hence, adaptive mutation.
遗传算法模仿达尔文的自然选择，其中“适应性”选择进行生存、繁殖以及由此而来的适应性变异的个体。
It mimics Darwinian natural selection, making "fitness" (as determined by a formula applied to an individual) the chief selector of individuals for survival and procreation, together with mutation.
它模拟达尔文的自然选择，还有变异，把“适应性”(正如适用于个体的公式所决定的那样)作为主要因素选择生存繁衍和变异的个体。
Every figure I've heard for both natural and artificial self-sustaining systems puts the self-stabilizing mutation rate between 1 percent and 0.01 percent.
我听说自然界和人造自持续系统的每一个数据都显示系统自稳定变异率在百分之一到万分之一之间。
Since the virus can't gain a foothold on cells that lack CCR5, people who have the mutation have natural protection.
如果细胞上没有足够的CCR 5, HIV病毒就无法在细胞上立足，所以有发生这种突变的人自然可以受到保护。
Neutral mutation — Evolution at the molecular level is primarily determined by mutational input and random genetic drift, rather than by natural selection.
天然突变——演化过程中在分子的层次上主要是经由随机的基因流而决定，并非借由天择所影响。
He believes that the natural disasters and mutation of the sky and earth were not the external manifestation of the natural movement, but the will of personified "Heaven".
他认为，自然灾害和天地的变异不是自然界运动的外在表现，而是作为有意志的人格神——“天”的意志的表现。
Genetic algorithms (GAs) are search algorithms based on of natural evolution processing including selection, mutation and crossover operations on the genes of individuals or potential solutions.
遗传算法是一种借鉴生物界自然选择和自然进化机制的搜索方法，通过对个体进行复制、交叉、变异操作完成搜索过程。
Containing three basic operators: reproduction, crossover and mutation, it imitates the evolution processes of natural organism.
基因算法是对自然界生物进化的一种模仿，它包含三个基本的算子：再生、交叉和变异。
It introduces the natural number coding method, adaptive probabilities of crossover and mutation, and furthermore, makes use of heuristic information to improve search efficiency effectively.
算法采用自然数编码，自适应的交叉变异算子，并融入启发式信息有效地提高了搜索效率。
Forces that can disturb this natural Balance are selection, mutation, gene flow, and natural selection.
能干扰这种自然平衡的外界因素有选择、突变、基因流动以及自然选择。
The algorithm used natural number coding method with dynamically adjustment for the probability coefficients of crossover and mutation, and used chaos optimization method as the mut.
对于模型的求解方法，构造了一种自适应的混沌遗传算法，采用自然数编码方式，动态的在线调整算法的交叉和变异概率，并采用混沌优化方法作为变异算子。
The natural number coding, the random population selection, the simple crossover strategy of "two-parents-and-one-kid" and the fixed mutation probability were totally adopted.
在算法中采用了自然数编码、随机选取种群、简单的“双亲单子”交叉策略和固定的突变概率。
The natural number coding, the random population selection, the simple crossover strategy of "two-parents-and-one-kid" and the fixed mutation probability were totally adopted.
在算法中采用了自然数编码、随机选取种群、简单的“双亲单子”交叉策略和固定的突变概率。
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