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Related Concept Videos

Meiosis I03:09

Meiosis I

Meiosis is the division of a diploid cell into haploid cells forming sperm and eggs in animals through differentiation. Meiosis I is the first stage of meiosis, where the genetic recombination of homologous chromosomes and the reduction of the ploidy level by half occurs.
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...
Meiosis I03:09

Meiosis I

Meiosis is the division of a diploid cell into haploid cells forming sperm and eggs in animals through differentiation. Meiosis I is the first stage of meiosis, where the genetic recombination of homologous chromosomes and the reduction of the ploidy level by half occurs.
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...
Meiosis I01:49

Meiosis I

Meiosis is a carefully orchestrated set of cell divisions, the goal of which—in humans—is to produce haploid sperm or eggs, each containing half the number of chromosomes present in somatic cells elsewhere in the body. Meiosis I is the first such division, and involves several key steps, among them: condensation of replicated chromosomes in diploid cells; the pairing of homologous chromosomes and their exchange of information; and finally, the separation of homologous chromosomes by a...
Meiosis vs. Mitosis02:57

Meiosis vs. Mitosis

Cell division is necessary for growth and reproduction in organisms. Mitosis aids cell growth and development by dividing somatic cells. In contrast, meiosis causes the division of germ cells and plays an essential role in sexual reproduction. Due to their unique functional requirements, mitosis and meiosis differ from each other in multiple aspects.
Before the start of mitosis and meiosis I, the cell synthesizes DNA, resulting in two homologous copies of each chromosome. DNA synthesis is...
Meiosis II02:02

Meiosis II

Meiosis II entails cell division and segregation of the sister chromatids, resulting in the production of four unique haploid gametes. The steps for meiosis II are similar to mitosis, except that meiosis II occurs in haploid cells, whereas mitosis occurs in diploid cells.
The timing and cell division patterns of meiosis differ between males and females. In male meiosis, the centrosomes are part of the formation of the meiotic spindle. However, in oocytes, including that of humans, Drosophila,...

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Updated: May 12, 2026

Live Imaging Characterization of Centromere Movements During Male Meiotic Prophase in Arabidopsis thaliana
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Published on: October 24, 2025

Analyzing meiotic chromosomes in rice.

Zhukuan Cheng1

  • 1State Key Laboratory of Plant Genomics and Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.

Methods in Molecular Biology (Clifton, N.J.)
|April 6, 2013
PubMed
Summary

Analyzing rice chromosomes is now routine thanks to new techniques for pachytene chromosome preparation. These methods improve visualization for cytogenetic studies in rice.

Area of Science:

  • Plant cytogenetics
  • Molecular biology
  • Genetics

Background:

  • Rice chromosomes are small and difficult to study cytologically.
  • Advancements in chromosome analysis techniques are crucial for plant genetics.

Purpose of the Study:

  • To provide protocols for analyzing rice meiotic chromosomes.
  • To overcome challenges in rice cytogenetic studies.

Main Methods:

  • Basic meiotic chromosome preparation techniques.
  • Fluorescence in situ hybridization (FISH) analysis.
  • Immunocytology protocols for rice.

Main Results:

  • Development of effective methods for pachytene chromosome analysis in rice.

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  • Routine visualization of meiotic chromosomes is now achievable.
  • Successful application of FISH and immunocytology.

    • Conclusions:

    • New techniques have significantly advanced rice chromosome analysis.
    • Cytogenetic studies in rice are now more accessible and routine.
    • These protocols facilitate deeper understanding of rice genetics.