homologies

简明释义

英[həˈmɑlədʒiz]美[həˈmɑlədʒiz]

n. [生化]同源性；[生物]同源（homology 的复数形式）

英英释义

单词用法

同义词

反义词

例句

1.This method does not rely on gene sequence or protein structure homologies, and it can be applied to any organism and a wide variety of experimental data sets.

这个方法不依赖于基因的序列或者是蛋白的同源结构，它能够适用于任何的生物体和大量的实验数据集。

2.This method does not rely on gene sequence or protein structure homologies, and it can be applied to any organism and a wide variety of experimental data sets.

这个方法不依赖于基因的序列或者是蛋白的同源结构，它能够适用于任何的生物体和大量的实验数据集。

3.Comparison with previously published sequence show 99.31% homologies in nucleotide sequence and 98.96% in amino acid sequence respectively.

与发表序列相比较，核苷酸序列及推导出的氨基酸序列的同源性分别为99.31%和98.96%。

4.Multiple alignments showed the proteins encoded on RNA1 of RSV-Zj shared 30-46% homologies with their counterparts of other tenuivirus.

与同属的其它成员的对应蛋白相比，则同源性则较低，约在30-46％之间。

5.Multiple alignments with the nearest homologies from the NCBI databases have revealed that the sequences of ScFv obtained are new.

从NCBI的数据库最近的同源性多重路线人士透露，单链抗体的获得的新序列。

6.Results Compared with the amino acid sequence of ESAT-6 of Mycobacterium tuberculosis published, the homologies was 90%.

结果结核分支杆菌重组抗原esat - 6与已发表氨基酸序列同源性为90%。

7.The study of evolutionary biology often focuses on the homologies 同源性 between different species.

进化生物学的研究通常关注不同物种之间的同源性。

8.In genetics, researchers look for homologies 同源性 in DNA sequences to understand how species are related.

在遗传学中，研究人员寻找DNA序列中的同源性以了解物种之间的关系。

9.The presence of homologies 同源性 in anatomical structures can indicate a common ancestor.

解剖结构中存在的同源性可能表明有一个共同的祖先。

10.Comparative anatomy relies heavily on identifying homologies 同源性 among vertebrates.

比较解剖学在很大程度上依赖于识别脊椎动物之间的同源性。

11.Molecular biologists use homologies 同源性 to trace the evolution of proteins across different organisms.

分子生物学家使用同源性追踪不同生物体中蛋白质的进化。

作文

In the study of biology, the concept of homologies (同源性) plays a crucial role in understanding the evolution and relationships among different species. Homologies refer to the similarities between characteristics or genes in different organisms that arise from a common ancestor. This concept is fundamental in the field of evolutionary biology as it helps scientists trace back the lineage of various species and understand how they have adapted to their environments over time. For example, consider the forelimbs of mammals such as humans, whales, and bats. Despite their differing functions—grasping, swimming, and flying, respectively—the underlying structure of these limbs is remarkably similar. This similarity is a result of homologies in their bone structures, indicating that these species share a common ancestor. By studying these homologies, researchers can infer how these species have evolved and diversified from that ancestor. The significance of homologies extends beyond physical traits; it also encompasses genetic information. Molecular biology has revealed that many organisms share similar DNA sequences, which can be traced back to shared ancestry. These genetic homologies provide insight into the evolutionary processes that have shaped life on Earth. For instance, the presence of certain genes in both humans and mice suggests that these genes were present in a common ancestor, allowing scientists to use mice as model organisms for studying human diseases. Understanding homologies is not only important for academic research but also has practical applications in fields such as medicine and conservation. In medicine, recognizing homologies between human genes and those of other species can lead to breakthroughs in understanding genetic disorders and developing treatments. For example, studying the homologies between human and primate genomes has provided insights into the genetic basis of diseases like cancer and diabetes, leading to more effective therapies. In conservation biology, identifying homologies among species can guide efforts to preserve biodiversity. By understanding the evolutionary relationships among species, conservationists can prioritize which species to protect based on their genetic diversity and ecological importance. This approach not only helps maintain the balance of ecosystems but also ensures that we preserve the genetic heritage of our planet. Furthermore, the study of homologies can enhance our appreciation for the interconnectedness of life. It reminds us that all living organisms are part of a larger evolutionary tapestry, woven together by shared ancestry. This perspective fosters a sense of responsibility towards preserving the environment and protecting endangered species, as we recognize that their survival is intricately linked to our own. In conclusion, homologies (同源性) are a fundamental concept in biology that provides valuable insights into the evolutionary relationships among species. By examining both physical and genetic homologies, scientists can unravel the complexities of evolution, inform medical research, and guide conservation efforts. Ultimately, understanding homologies enriches our knowledge of life on Earth and underscores the importance of preserving our planet's biodiversity.