inbreeding

简明释义

英[ˈɪnbriːdɪŋ]美[ˈɪnbriːdɪŋ]

n. 近亲交配；同系繁殖

v. 近亲交配（inbreed 的 ing 形式）

英英释义

单词用法

同义词

反义词

例句

1.And this is what happens with small populations and inbreeding of close relatives.

当一个物种的种群数量稀少而又不得不近亲繁殖时，灭绝就会发生。

2.Useful life of breeding flock ram should not surpass 4 years according to inbreeding increment.

从近交系数增量考虑，育种群公羊使用年限最多不应超过4年。

3.Poaching, deforestation, and inbreeding have caused the near extinction of these big cats.

盗猎、森林砍伐以及近亲繁殖造成了牠们几近灭种。

4.The same effects of inbreeding may have occurred in controlled cattle populations, with some additional, and perhaps unrecognized, advantages.

近亲繁殖在有限的一部分牛群中可能会有同样的效果，同时它还有其他一些也许还未被认识到的优点。

5.The contents of ureotelism and globulin increased and hemoglobin decreased with inbreeding coefficient in systematic breeding.

尿素氮和球蛋白含量在系统选择中随近交系数的上升而下降，血红素含量却上升。

6.We simulated the impacts of breeding herd size, reproductive skew and numbers of breeding stags on the inbreeding coefficient of Père David's deer.

模拟分析了繁殖群体大小、繁殖偏倚和占群优势雄性数目对麋鹿的有效种群大小的影响。

7.In the 19th century, inbreeding nearly led to the extinction of the royal family.

19世纪，近亲婚配几乎导致了皇室宗族的灭绝。

8.But inbreeding parents can pool the mutations in offspring, overwhelming the backup systems.

此外，近亲繁殖的父母将此突变集中于后代，掩盖了原本的基因系统。

9.Thomas says the legendary inbreeding of Egypt's royal families probably had little to do with the incidence of heart disease, however.

不过Thomas说，传说的埃及法老近亲通婚很可能和心脏病发病率没什么关系。

10.To avoid inbreeding, many breeders introduce new genetic lines into their stock.

为了避免近亲繁殖，许多饲养者会在其种群中引入新的基因系。

11.The study revealed that inbreeding can lead to a decrease in fertility rates.

研究显示，近亲繁殖可能导致生育率下降。

12.In some isolated communities, inbreeding has led to higher rates of genetic disorders.

在一些孤立的社区中，近亲繁殖导致了遗传疾病发生率的提高。

13.The farmer noticed that the livestock showed signs of weakness due to continuous inbreeding.

农场主注意到，由于持续的近亲繁殖，家畜表现出虚弱的迹象。

14.The biologist explained how inbreeding affects the genetic diversity of a species.

生物学家解释了近亲繁殖如何影响一个物种的遗传多样性。

作文

In the realm of genetics, the term inbreeding refers to the breeding of closely related individuals, which can lead to a variety of genetic issues. This practice is often seen in animal husbandry and plant cultivation, where breeders aim to enhance specific traits. However, inbreeding can also have detrimental effects on the health and viability of the population involved. For example, when two genetically similar animals mate, there is a higher chance that their offspring will inherit harmful recessive traits. This phenomenon is particularly concerning in small populations where the gene pool is limited.One of the most significant consequences of inbreeding is the increased likelihood of genetic disorders. In humans, this can lead to conditions such as cystic fibrosis or sickle cell anemia. In animals, inbreeding can result in issues like reduced fertility, lower birth rates, and a higher susceptibility to diseases. These problems arise because inbreeding reduces genetic diversity, making it more challenging for a population to adapt to environmental changes or resist diseases.In agriculture, inbreeding is sometimes used to produce hybrid crops with desirable traits. However, while the initial results may be promising, relying too heavily on inbreeding can lead to a decline in crop resilience over time. Farmers must balance the benefits of selective breeding with the risks associated with reduced genetic variation.Moreover, inbreeding can have ecological implications. For instance, endangered species often face the threat of inbreeding due to their dwindling numbers. Conservation efforts frequently focus on increasing genetic diversity to prevent the negative effects of inbreeding. By introducing individuals from different populations, conservationists hope to enhance the overall health and adaptability of the species.Despite its potential drawbacks, inbreeding can also be a useful tool when applied judiciously. In controlled environments, breeders can monitor genetic outcomes and minimize the risks associated with inbreeding. For example, some dog breeds are intentionally bred through inbreeding to maintain specific physical characteristics. However, responsible breeders take care to avoid the pitfalls of excessive inbreeding, ensuring that the health and well-being of the animals remain a priority.In conclusion, while inbreeding can serve certain purposes in genetics and agriculture, it is crucial to understand its potential consequences. The practice can lead to a host of genetic issues, reduced health, and decreased adaptability in populations. As we continue to explore the complexities of genetic science, it is essential to strike a balance between harnessing the benefits of inbreeding and safeguarding the health of both human and animal populations. By promoting genetic diversity and being mindful of the risks associated with inbreeding, we can work towards a healthier future for all living organisms.

在遗传学领域，术语近亲繁殖指的是亲缘关系较近的个体之间的繁殖，这可能导致各种遗传问题。这种做法通常出现在动物饲养和植物栽培中，育种者旨在增强特定特征。然而，近亲繁殖也可能对参与种群的健康和生存能力产生不利影响。例如，当两个基因相似的动物交配时，他们的后代更有可能遗传有害的隐性特征。这种现象在小型种群中特别令人担忧，因为基因库有限。近亲繁殖最显著的后果之一是遗传疾病的发生率增加。在人类中，这可能导致囊性纤维化或镰状细胞贫血等疾病。在动物中，近亲繁殖可能导致生育能力降低、出生率下降以及对疾病的易感性增加。这些问题的出现是因为近亲繁殖减少了遗传多样性，使得种群适应环境变化或抵抗疾病变得更加困难。在农业中，有时会使用近亲繁殖来生产具有理想特征的杂交作物。然而，尽管最初的结果可能令人满意，但过度依赖近亲繁殖可能导致作物韧性的下降。农民必须在选择性繁殖的好处和与遗传变异减少相关的风险之间找到平衡。此外，近亲繁殖还可能带来生态影响。例如，濒危物种由于数量减少而面临近亲繁殖的威胁。保护工作通常集中在增加遗传多样性，以防止近亲繁殖的负面影响。通过引入来自不同种群的个体，保护主义者希望增强物种的整体健康和适应能力。尽管存在潜在缺点，但在谨慎应用时，近亲繁殖也可以是一种有用的工具。在受控环境中，育种者可以监测遗传结果，并最小化与近亲繁殖相关的风险。例如，一些犬种通过近亲繁殖故意繁殖，以保持特定的外观特征。然而，负责任的育种者会小心避免过度近亲繁殖的陷阱，确保动物的健康和福祉仍然是优先考虑的事项。总之，虽然近亲繁殖在遗传学和农业中可以发挥某些作用，但理解其潜在后果至关重要。这一做法可能导致一系列遗传问题、健康下降和种群适应能力减弱。随着我们继续探索遗传科学的复杂性，必须在利用近亲繁殖的好处和保护人类及动物种群的健康之间取得平衡。通过促进遗传多样性并关注与近亲繁殖相关的风险，我们可以为所有生物的健康未来而努力。