生物变异包括遗传变异和不遗传变异。
Biomutation includes hereditary biomutation and non-hereditary biomutation.
很多遗传变异是全球性的。
千人基因组计划完成了人类遗传变异的首份图谱。
The 1000 Genomes Project completed its first map of human genetic variation.
每个族群只携带有他们祖先群体中遗传变异的一部分。
Each group carried only a subset of the genetic variation from its ancestral population.
他们注意到，这类遗传变异更加经常和大脑紊乱有关。
This type of genetic variation is more common in those with brain disorders, they noted.
但白虎仅仅是一种罕见的遗传变异，而不是一个不同的品种。
But white tigers are rare genetic mutations, not a different species.
拟态是无数代自然选择和遗传变异的进化而获得的有利特征的结果。
Mimicry arises as the result of evolution through natural selection and the occurrence of random genetic mutations that lead over many generations to the appearance of favorable characteristics.
存在这些遗传变异的这些基因的女性会增加早发乳腺癌的风险。
Women who inherit mutated forms of those genes are at increased risk of developing breast cancer earlier in life.
在这些所有测试中，遗传变异小鼠记忆力更好。它们学习的更快。
In all these tests, the genetic mice had better memories. They learned faster.
他们在远离非洲的过程中丢失了一部分遗传变异，”Rosenberg说。
So there is a loss of genetic diversity with the distance from Africa, " Rosenberg said.
每经过这样一个时期，群体就会因人的大量死亡而失去许多遗传变异。
Each time that happened, the population lost a lot of its genetic diversity simply because a lot of people died.
药物遗传学是基于人群的遗传变异研究该人群对药物的遗传反应的分别。
Pharmacogenomics is the study of the stratification of the pharmacological response to a drug by a population based on the genetic variation of that population.
事实上，一些与更大的敏感性相关遗传变异也和有较少的负面情绪相关。
In fact, some of the genetic variants linked with greater sensitivity are also associated with less negative emotionality.
或许最令人惊讶的是，初步分析显示百岁老人与对照组有同样多的疾病相关的遗传变异。
Perhaps most surprisingly, preliminary analysis showed that centenarians had just as many genetic variants linked to diseases as did people in the control group.
dna指纹鉴定可用于全世界医院对出生前和新出生婴儿的遗传变异进行诊断。
DNA fingerprint is used to diagnose inherited disorders in both prenatal and newborn babies in hospitals around the world.
由于这种抗原很少出现，因此它不可能是由于人类血液中遗传变异形成的抗原。
Since it occurred only rarely, it was unlikely to be an antigen caused by genetic variation in human blood.
表观遗传变异是由附属于基因的其他分子作用引起基因表达改变的可遗传的变异。
Epigenetic changes are heritable changes to the regulation of a cell's genes, caused by extra molecules being attached to those genes.
研究者对每份样品进行大约四次测序，然后结合不同人的测序结果比较遗传变异。
The researchers sequenced each sample approximately four times, and then combined the data with that of different people to compare genetic variations.
而对于遗传变异小鼠，产生这种抑制蛋白较少，使得动物学习的更快，记忆的更久。
In the genetically altered mice, less of that inhibiting protein is produced, allowing the animals to process learning faster and to remember longer.
然后我们才能真正地开始寻找该物种的种内遗传变异，并获得和耐药性或毒力有关的一些基因的信息。
Then we can really start to look at the genetic variation within the species and gain insight into some of the genes involved in drug resistance or virulence.
事实上，过去几十年来人们一直对有多少种遗传变异争论不休，因为这个数字远远超出任何人的想象。
Indeed, one of the great surprises of the past decades has been how much genetic variation there is, for there's far more than anyone expected.
由于母体的可遗传变异使得这些特殊的细胞不可能被用于繁殖，但是能够帮助科学家总结出繁殖过程。
Although this particular batch of cells is unlikely to be used for assisted reproduction because of the donor's heritable mutation, it will help scientists work the process out.
早期的农民拣出那些因随机的遗传变异而没有碎裂的小麦，由于不会碎裂，因而它们是收获的理想之选。
Early farmers selected out wheat that, due to a random genetic mutation, didn't shatter and was thus ideal for harvesting.
本研究为优良同源四倍体桔梗的推广应用和优良种质离体保存、减少遗传变异提供了技术依据。
This research provided techniques for the application, conservation in vitro of excellent germplasm and reduction of heredity variance of autotetraploids of Plalycodon grandiflorum.
现在，25 %的对疾病的敏感性被归咎于遗传变异。但在镰细胞基因上的变异仅仅参与了其中的一小部分。
It is now known that genetic variability accounts for 25% of susceptibility to the disease, but that variations in the sickle-cell gene contribute to only a fraction of that.
这些常见的遗传变异在针对生物学途径方面和藏匿对少数家庭有较大影响的罕见变种的基因方面同样有着作用。
These common genetic variants are [also] useful in pointing to biological pathways or genes that might harbor rarer variants with larger effects in a few families.
没有遗传变异，一个物种就缺乏进化的能力并且无法适应它环境的改变或新的掠食者或是新的疾病。
Without genetic variability a species lacks the capacity to evolve and cannot adapt to changes in its environment or to new predators and new diseases.
两对手研究团队已发现在有欧洲血统的人中，近60%的人具有一个共同的心脏病危险因子遗传变异。
Two rival teams of scientists have discovered a common genetic variation that increases the risk of heart disease up to 60 percent in people of European descent.
两对手研究团队已发现在有欧洲血统的人中，近60%的人具有一个共同的心脏病危险因子遗传变异。
Two rival teams of scientists have discovered a common genetic variation that increases the risk of heart disease up to 60 percent in people of European descent.
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