maturation division

简明释义

成熟分裂

英英释义

例句

1.In meiosis, the maturation division occurs after DNA replication, leading to the formation of haploid cells.

在减数分裂中，成熟分裂发生在DNA复制之后，导致单倍体细胞的形成。

2.During the maturation division, the chromosomes are halved, ensuring genetic diversity in the offspring.

在成熟分裂过程中，染色体被减半，确保后代的遗传多样性。

3.Understanding the role of maturation division can help researchers develop better fertility treatments.

理解成熟分裂的作用可以帮助研究人员开发更好的生育治疗方法。

4.The process of gametogenesis involves a crucial step known as maturation division, which is essential for producing viable gametes.

配子发生的过程涉及一个关键步骤，称为成熟分裂，这是产生可行配子的必要条件。

5.The failure of maturation division can lead to infertility in both males and females.

成熟分裂的失败可能导致男性和女性的不育。

作文

The process of cell division is fundamental to the growth and development of all living organisms. Among the various types of cell division, one that is particularly significant in the context of sexual reproduction is known as maturation division. This term refers to the specific stages of meiosis, during which germ cells undergo a series of transformations to produce gametes—sperm in males and eggs in females. Understanding maturation division is crucial for comprehending how genetic diversity is achieved through sexual reproduction.During maturation division, a diploid cell undergoes two successive divisions: meiosis I and meiosis II. In meiosis I, homologous chromosomes are separated, resulting in two haploid cells, each containing half the chromosome number of the original cell. This stage is essential because it ensures that when fertilization occurs, the resulting zygote will have the correct diploid number of chromosomes. The second phase, meiosis II, resembles mitosis, where the sister chromatids are separated, ultimately leading to the formation of four genetically distinct haploid gametes.One of the most fascinating aspects of maturation division is the introduction of genetic variation through processes such as crossing over and independent assortment. Crossing over occurs during prophase I of meiosis, where segments of DNA are exchanged between homologous chromosomes. This genetic recombination results in new combinations of alleles, contributing to the genetic diversity of offspring. Independent assortment, which takes place during metaphase I, further enhances this diversity by allowing different combinations of maternal and paternal chromosomes to be distributed to the gametes.The implications of maturation division extend beyond basic biology; they are also crucial for fields such as genetics, agriculture, and medicine. For instance, understanding how gametes are formed can help scientists in developing techniques for assisted reproductive technologies, such as in vitro fertilization (IVF). Moreover, knowledge of maturation division can aid in breeding programs aimed at enhancing desirable traits in crops and livestock, ensuring food security and sustainability.In conclusion, maturation division plays a pivotal role in sexual reproduction by facilitating the production of gametes and promoting genetic diversity. Its significance spans across various scientific disciplines, highlighting the interconnectedness of biological processes. By delving deeper into the mechanisms of maturation division, we not only gain insights into the fundamental principles of life but also unlock potential applications that can benefit humanity as a whole.

细胞分裂的过程是所有生物体生长和发育的基础。在各种细胞分裂类型中，特别重要的是在性繁殖背景下被称为maturation division的过程。这个术语指的是减数分裂的特定阶段，在这些阶段中，生殖细胞经历一系列转变以产生配子——男性的精子和女性的卵子。理解maturation division对理解如何通过性繁殖实现遗传多样性至关重要。在maturation division过程中，一个二倍体细胞经历两次连续的分裂：减数分裂I和减数分裂II。在减数分裂I中，同源染色体被分开，形成两个单倍体细胞，每个细胞的染色体数量是原始细胞的一半。这个阶段至关重要，因为它确保在受精发生时，所产生的合子将具有正确的二倍体染色体数量。第二阶段，减数分裂II，类似于有丝分裂，其中姐妹染色单体被分开，最终导致四个在遗传上各不相同的单倍体配子的形成。maturation division最引人入胜的方面之一是通过交叉互换和独立分配引入遗传变异。交叉互换发生在减数分裂的前期I阶段，在这一阶段，同源染色体之间的DNA片段被交换。这种遗传重组导致新的等位基因组合，从而促进后代的遗传多样性。独立分配发生在减数分裂的中期I阶段，通过允许不同组合的母本和父本染色体分配到配子中，进一步增强这种多样性。maturation division的影响超越了基础生物学；它们对遗传学、农业和医学等领域也至关重要。例如，理解配子的形成过程可以帮助科学家开发辅助生殖技术的手段，如体外受精（IVF）。此外，了解maturation division可以帮助改良项目，以增强作物和牲畜中的优良性状，确保粮食安全和可持续性。总之，maturation division在性繁殖中发挥着关键作用，通过促进配子的产生和促进遗传多样性。它的重要性跨越了多个科学学科，突显了生物过程之间的相互联系。通过深入研究maturation division的机制，我们不仅获得了生命基本原则的见解，还解锁了可以惠及全人类的潜在应用。