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Related Concept Videos

Oogenesis02:07

Oogenesis

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In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
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Oogenesis01:22

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Oogenesis,  the process of developing egg cells (female gametes), occurs within the ovaries and is fundamental to female fertility. This sequence begins during fetal development when diploid oogonia in the developing ovaries undergo mitotic divisions to produce primary oocytes. By birth, these primary oocytes enter prophase I of meiosis but become arrested in this stage, remaining suspended until puberty.
Each primary oocyte is surrounded by a layer of pre-granulosa cells, forming what is...
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Related Experiment Video

Updated: Mar 15, 2026

Cell-Specific Paired Interrogation of the Mouse Ovarian Epigenome and Transcriptome
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Studying Oogenesis in a Non-model Organism Using Transcriptomics: Assembling, Annotating, and Analyzing Your Data.

Jean-Michel Carter1, Melanie Gibbs2, Casper J Breuker3

  • 1Evolutionary Developmental Biology Research Group, Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Gipsy Lane, Headington, Oxford, OX3 0BP, UK.

Methods in Molecular Biology (Clifton, N.J.)
|August 26, 2016
PubMed
Summary
This summary is machine-generated.

This guide details RNA-Seq data processing for non-model organisms, using butterfly oogenesis as a case study. It introduces a multi-BLAST strategy for enhanced primary annotation and covers essential next-generation sequencing analysis steps.

Keywords:
AnnotationDe-novo assemblyNon-model organismOogenesisTranscriptome

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Area of Science:

  • Genomics
  • Bioinformatics
  • Developmental Biology

Background:

  • Analyzing RNA-Seq data in non-model organisms presents unique annotation challenges.
  • Accurate gene annotation is crucial for understanding biological processes.

Purpose of the Study:

  • To provide a comprehensive guide for processing and analyzing RNA-Seq data in non-model organisms.
  • To present a multi-BLAST annotation strategy for improved primary annotation.
  • To detail essential next-generation sequencing analysis workflow steps.

Main Methods:

  • RNA-Sequencing (RNA-Seq) data processing and analysis.
  • Multi-BLAST annotation strategy for non-model organisms.
  • Utilizing Galaxy platform and database operations for annotation pipeline.

Main Results:

  • Demonstrated a method for informative primary annotation of non-model organisms.
  • Outlined a general workflow for next-generation sequencing data analysis.
  • Applied the approach to study oogenesis in the Speckled Wood Butterfly (Pararge aegeria).

Conclusions:

  • The proposed multi-BLAST strategy enhances primary annotation for non-model organisms.
  • This guide facilitates RNA-Seq data analysis in understudied species.
  • Familiarity with command line and database handling is recommended for effective implementation.