而使个体更好适应环境的变异将让这些个体有更多的后代。
Variations that made individuals better adapted to their environment would let them have more offspring.
我们祖先的一个基因变异使得他们的后代拥有能够容纳更大的大脑的头骨。
A genetic mutation in our recent ancestors caused their descendants to have roomy skulls that accommodated larger brains.
首先是三种变异个体类似地成群，这表明它们是同一祖先的后代。
The first was that the three variables clustered similarly, suggesting that they were accurate markers of ancestry.
NMU诱变也具有特异性，例如在早籼26后代中出现了糯性变异株系。
NMU has also peculiar quality , for example the glutinous variation appears in the later generation of Zaoxian 26.
本文利用花粉管通道在大豆自花受粉后，将野生大豆DNA导入栽培大豆，从而引起了后代性状的广泛变异。
This study reports that wild soybean DNA was introduced into cultivar soybean through pollen tube after soybean self-fertilizing, it led to wide variation in offspring characteristics.
平流层辐射对谷子的营养生长及后代性状的变异有显著影响。
A significant influence on vegetative growth and character variation in offsprings of millet by irradiation in the stratosphere were investigated.
后代群体盖径、柄径、柄长的变异程度相当，差异性不显著。
The variation degree of pileus diameter is similar to that of stipe diameter and stipe length.
以离体培养筛选出的耐盐小麦变异系及其后代为材料，对其耐盐稳定性进行有关生理生化特性分析。
Salt tolerant wheat variety that selecting under salt stress in vitro, and their progeny were studied on genetic stability by biochemical analysis.
如果变异使得它的一些后代获得两份这种基因，这些后代们不会变的更适应环境。
If mutation results in some offspring getting two copies of this gene, these offspring won't be any fitter as a result.
总之，基因是存在变异的，遗传性的病症也有可能不遗传给后代，因此您可不必有这样的疑虑了。
In short, the existence of genetic variation, genetic diseases also may not be passed on to future generations, so you do not doubt that there must be a.
本文采用聚丙烯酰胺凝胶电泳的方法，对利用花粉管通道途径，导入外源DNA所获大豆变异后代，进行过氧化物酶酶谱分析。
With the method of polyacrylamide gel electrophoresis analysis of the peroxidase patterns in variant progenies of soybean obtained by introduction of DNA through pollen tube.
通过对导入外源dna的小麦变异后代进行抗旱性和耐盐性的鉴定，筛选到四个抗旱耐盐性较好的小麦新品系。
By the test of salt and drought resistance of wheat variation offspring produced by exogenous DNA introduction, four variation offspring strains were screened with better salt and drought resistance.
本研究采用SDS—PAGE分析了冀麦七号、冀麦18和冀早15三个品种激光后代籽粒贮藏蛋白的变异情况。
Variation of seed storage protein subunits from laser treatment offsprings of Jimai 7, Jimai 18, Jizao 15 was analyzed by SDS-PAGE.
导入后代植株形态性状上的变异主要表现为籽粒颜色特殊，部分株系植株较高、叶片肥大、茎杆粗壮；
The main variations of offspring in the plant morphologic characters were special seed-color, tall plant height, fat leaves and thick stalk.
具有相同脂肪酸含量的两个亲本杂交，后代(DH系)脂肪酸含量变异程度最大。
And the variance of fatty acid content of the DH lines derived from a cross combination of parents with the same fatty acid contents was the most remarkable.
有性后代除叶厚变异范围较小外，其它参数变异范围都较大。
The variation range of other parameters was larger, except the leaf thickness.
选用高粱恢复系体细胞克隆变异后代稳定材料R111，搭载1996年第十七次返回式卫星进行处理，其后代获得大量变异系。
To somatic colone variation progeny stable material R111 of sorghum recovery line was treated in No. 17 returning satellite in 1996 and its progeny has got excellent new germplasm have been developed.
从油菜品种资源以及杂交后代中发现了油菜叶变异株——凸耳叶植株。
A leaf-on-leaf mutant, with special leaves growing on a true leaf have been selected from the rape varieties resources and their hybrid generations.
经形态变异研究后发现它们可能是这两个物种之间的杂交后代。
These intermediate individuals were hypothesized to be the hybrids of two species after a careful evaluation of their morphological characters.
经形态变异研究后发现它们可能是这两个物种之间的杂交后代。
These intermediate individuals were hypothesized to be the hybrids of two species after a careful evaluation of their morphological characters.
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