pericentric

简明释义

英[ˌpɛrɪˈsɛntrɪk]美[ˌpɛrɪˈsɛntrɪk]

臂间的

英英释义

单词用法

同义词

反义词

例句

1.Conclusion Pericentric inversion of chromosome 9 can result in abnormal fertility.

结论9号染色体臂间倒位可导致异常生育。

2.Conclusion Pericentric inversion of chromosome 9 can result in abnormal fertility.

结论9号染色体臂间倒位可导致异常生育。

3.The term pericentric refers to the region surrounding the centromere of a chromosome.

术语pericentric指的是染色体着丝粒周围的区域。

4.In genetics, a pericentric inversion involves a segment of a chromosome that includes the centromere.

在遗传学中，pericentric倒位涉及一个包含着丝粒的染色体片段。

5.Research showed that pericentric regions are crucial for proper chromosome segregation during cell division.

研究表明，pericentric区域对细胞分裂过程中染色体的正确分离至关重要。

6.Mutations in the pericentric area can lead to various genetic disorders.

在pericentric区域的突变可能导致各种遗传疾病。

7.The pericentric heterochromatin plays a significant role in gene regulation.

pericentric异染色质在基因调控中发挥着重要作用。

作文

In the realm of genetics, understanding the structure and behavior of chromosomes is crucial for comprehending how traits are inherited and how genetic disorders arise. One important concept that often comes up in discussions about chromosome structure is the term pericentric, which refers to a specific type of chromosomal inversion. To fully grasp the significance of pericentric inversions, it is essential to first understand what inversions are. Inversions occur when a segment of a chromosome breaks off, flips around, and reattaches in the reverse orientation. This can happen in two primary forms: pericentric and paracentric inversions. While paracentric inversions do not involve the centromere, pericentric inversions do, making them particularly noteworthy. When a pericentric inversion occurs, the segment that is inverted includes the centromere, the region of the chromosome that plays a vital role during cell division. The presence of the centromere in a pericentric inversion means that the resulting chromosome can have altered gene sequences on either side of the inversion. This alteration can lead to significant consequences for the organism, especially when it comes to reproduction. If a gamete (sperm or egg) carries a pericentric inversion, it may result in offspring with unbalanced chromosomal arrangements, leading to developmental issues or genetic disorders. The importance of studying pericentric inversions extends beyond just understanding genetic disorders. They also provide insight into evolutionary processes. By examining the presence of pericentric inversions across different species, scientists can infer evolutionary relationships and the mechanisms by which species adapt to their environments. For instance, certain pericentric inversions may confer advantages in specific ecological niches, allowing organisms to thrive in changing conditions. Moreover, pericentric inversions can be a source of genetic diversity within populations. As these inversions can lead to variations in gene expression, they can contribute to the phenotypic diversity observed in natural populations. This diversity is crucial for the survival of species, as it allows for greater adaptability to environmental changes. In conclusion, the term pericentric holds significant weight in the field of genetics, encapsulating concepts that are fundamental to our understanding of chromosome behavior, genetic disorders, evolutionary biology, and biodiversity. By exploring the implications of pericentric inversions, we gain valuable insights into the complexities of genetics and the intricate tapestry of life itself. Understanding such terms not only enriches our knowledge but also underscores the importance of genetic research in addressing contemporary health and environmental challenges. As we continue to unravel the mysteries of genetics, the study of pericentric inversions will undoubtedly remain a key area of interest for researchers seeking to understand the underlying principles of heredity and evolution.

在遗传学领域，理解染色体的结构和行为对于理解特征是如何遗传的以及遗传疾病是如何产生的至关重要。一个常常出现在关于染色体结构讨论中的重要概念是术语pericentric，它指的是一种特定类型的染色体倒位。要充分理解pericentric倒位的重要性，首先必须了解什么是倒位。倒位发生在染色体的一段断裂、翻转并以反向方向重新连接时。这种情况主要有两种形式：pericentric和旁中心倒位。而pericentric倒位涉及着心粒，而旁中心倒位则不涉及，因此pericentric倒位显得尤为重要。 当发生pericentric倒位时，被倒置的片段包括心粒，即在细胞分裂过程中起着至关重要作用的染色体区域。pericentric倒位的存在意味着所得到的染色体在倒位的两侧可能具有改变的基因序列。这种改变可能对生物体产生重大影响，尤其是在繁殖方面。如果一个配子（精子或卵子）携带了pericentric倒位，它可能导致后代具有不平衡的染色体排列，从而导致发育问题或遗传疾病。 研究pericentric倒位的重要性不仅限于理解遗传疾病。它们还提供了对进化过程的洞察。通过检查不同物种中pericentric倒位的存在，科学家可以推断进化关系以及物种适应其环境的机制。例如，某些pericentric倒位可能在特定生态位上赋予优势，使生物体能够在变化的条件下茁壮成长。 此外，pericentric倒位可以是种群内遗传多样性的来源。由于这些倒位可能导致基因表达的变化，它们可以促进自然种群中观察到的表型多样性。这种多样性对物种的生存至关重要，因为它允许更大的适应性来应对环境变化。 总之，术语pericentric在遗传学领域具有重要意义，涵盖了我们理解染色体行为、遗传疾病、进化生物学和生物多样性所需的基本概念。通过探索pericentric倒位的影响，我们获得了对遗传学复杂性的宝贵见解，以及生命本身错综复杂的织锦。理解这样的术语不仅丰富了我们的知识，还强调了遗传研究在应对当代健康和环境挑战中的重要性。 随着我们继续揭开遗传学的神秘面纱，对pericentric倒位的研究无疑将继续成为研究人员寻求理解遗传和进化基本原理的关键领域。