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Genome Annotation and Assembly

The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
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Updated: May 11, 2026

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles
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Published on: July 11, 2025

Draft assemblies for 177 bird species enhance genus-level coverage.

Guangji Chen1, Shuang Wang1, Daniel Bilyeli Øksnebjerg2

  • 1Center for Evolutionary & Organismal Biology, Liangzhu Laboratory & Women's Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China.

Gigascience
|May 9, 2026
PubMed
Summary
This summary is machine-generated.

The Bird Genome 10K Project generated 177 high-quality avian genomes from museum specimens using low-input sequencing. This breakthrough expands genomic resources for bird evolutionary and conservation studies.

Keywords:
biodiversitybirdsgenome sequencing

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Area of Science:

  • Genomics
  • Evolutionary Biology
  • Bioinformatics

Background:

  • Birds are a highly diverse vertebrate group with over 10,000 species.
  • Avian genomics has advanced, but significant gaps remain in genomic data coverage.
  • Museum specimens are valuable for genomics but present challenges due to degraded DNA.

Purpose of the Study:

  • To fill gaps in avian genomic data by sequencing species from museum collections.
  • To develop and apply cost-effective, low-input sequencing strategies for high-quality genome assembly.
  • To expand the taxonomic and evolutionary understanding of birds through comprehensive genomic data.

Main Methods:

  • Utilized low-input sequencing strategies, including stLFR and 10X Genomics.
  • Sequenced 177 avian genomes from museum and tissue collections, representing 161 genera.
  • Employed advanced bioinformatics to assemble and assess genome quality.

Main Results:

  • Achieved high-quality genome assemblies with an average size of ~1.2 Gb.
  • Demonstrated improved assembly quality and cost-efficiency compared to previous methods.
  • Generated 102 newly sequenced genomes, significantly enhancing avian genomic representation.

Conclusions:

  • Low-input sequencing is effective for high-quality avian genome assembly from museum specimens.
  • The generated genomes significantly expand avian taxonomic coverage.
  • This genomic resource supports comparative genomics, conservation genetics, and evolutionary research across birds.