chromosome number

简明释义

染色体数

英英释义

例句

1.The study of the fruit fly has revealed that its chromosome number 染色体数目 is 8.

对果蝇的研究表明，它的染色体数目是8。

2.An abnormal chromosome number 染色体数目 can lead to genetic disorders.

异常的染色体数目可能导致遗传疾病。

3.In humans, the normal chromosome number 染色体数目 is 46.

在人类中，正常的染色体数目是46。

4.Researchers are investigating how chromosome number 染色体数目 affects plant growth.

研究人员正在调查染色体数目如何影响植物生长。

5.Down syndrome is caused by an extra copy of chromosome 21, resulting in a total chromosome number 染色体数目 of 47.

唐氏综合症是由于第21号染色体的额外副本导致的，总染色体数目为47。

作文

The study of genetics has always fascinated scientists and researchers alike. One of the fundamental concepts in genetics is the concept of chromosome number, which refers to the total number of chromosomes present in the cells of an organism. This number varies significantly across different species and plays a crucial role in determining the genetic characteristics of an organism. For instance, humans have a chromosome number of 46, arranged in 23 pairs, while fruit flies have only 8 chromosomes. Such variations not only highlight the diversity of life on Earth but also emphasize the importance of understanding the chromosome number in the field of genetics.Each chromosome contains many genes, which are the units of heredity that dictate various traits and functions of an organism. The chromosome number is essential for proper cell division during mitosis and meiosis. During these processes, the chromosomes are duplicated and evenly divided to ensure that each daughter cell receives the correct number of chromosomes. Any errors in this process can lead to conditions such as Down syndrome, which is caused by an extra copy of chromosome 21, resulting in a total chromosome number of 47 instead of the usual 46.In plants, the chromosome number can also play a significant role in evolution and adaptation. Polyploidy, a condition where an organism has more than two complete sets of chromosomes, is common in plants and can lead to increased size and vigor. For example, wheat is a polyploid organism with a complex chromosome number that allows it to thrive in various environments. Understanding the implications of chromosome number in both animals and plants can provide valuable insights into breeding programs and conservation efforts.Moreover, the chromosome number can influence reproductive strategies and behaviors among different species. Some organisms may have a stable chromosome number that allows for consistent reproduction, while others may exhibit variations that can lead to speciation. The study of how chromosome number affects reproductive success is a fascinating area of research that can help explain the mechanisms of evolution.In conclusion, the chromosome number is a vital aspect of genetics that impacts the biology of organisms at multiple levels. From determining physical traits to influencing evolutionary processes, the significance of chromosome number cannot be overstated. As we continue to explore the complexities of genetics, a deeper understanding of chromosome number will undoubtedly enhance our knowledge of life itself and its myriad forms. By studying the variations in chromosome number across species, we can appreciate the intricate tapestry of life and the genetic foundations that support it.

遗传学的研究一直吸引着科学家和研究人员。遗传学中的一个基本概念是染色体数目，它指的是一个生物体细胞中存在的总染色体数量。这个数字在不同物种之间有显著差异，并在决定生物体的遗传特征方面起着至关重要的作用。例如，人类的染色体数目为46，排列成23对，而果蝇只有8条染色体。这种变异不仅突显了地球生命的多样性，也强调了在遗传学领域理解染色体数目的重要性。每条染色体包含许多基因，这些基因是决定生物体各种特征和功能的遗传单位。染色体数目对于有丝分裂和减数分裂期间的正常细胞分裂至关重要。在这些过程中，染色体被复制并均匀分配，以确保每个子细胞接收到正确数量的染色体。此过程中的任何错误都可能导致如唐氏综合症等疾病，该病由于第21号染色体的额外副本而引起，导致总染色体数目为47，而不是通常的46。在植物中，染色体数目也可以在进化和适应中发挥重要作用。多倍体，即一个生物体拥有超过两个完整的染色体组，是植物中常见的现象，可以导致大小和活力的增加。例如，小麦是一种多倍体生物，其复杂的染色体数目使其能够在各种环境中生存。理解染色体数目在动物和植物中的影响可以为育种计划和保护工作提供有价值的见解。此外，染色体数目可以影响不同物种的繁殖策略和行为。一些生物体可能具有稳定的染色体数目，允许一致的繁殖，而其他生物体可能表现出变异，这可能导致物种形成。研究染色体数目如何影响繁殖成功是一个迷人的研究领域，可以帮助解释进化机制。总之，染色体数目是遗传学的一个重要方面，影响着生物体在多个层面的生物学。从决定身体特征到影响进化过程，染色体数目的重要性不容小觑。随着我们继续探索遗传学的复杂性，对染色体数目的更深入理解无疑将增强我们对生命本身及其多样形式的认识。通过研究不同物种间的染色体数目变异，我们可以欣赏生命的精妙结构以及支持生命的遗传基础。