Complete sequencing of ape genomes.

Area of Science:

• Genomics
• Evolutionary Biology
• Primatology

Background:

• Repetitive and dynamic genomic regions in great apes have been largely unstudied, limiting evolutionary insights.
• Previous comparative genomics relied on incomplete or biased reference genomes.

Purpose of the Study:

• To generate high-quality, haplotype-resolved reference genomes for six great ape species.
• To conduct comparative analyses of previously inaccessible genomic regions.
• To provide a comprehensive resource for studying ape and human evolution.

Main Methods:

• Sequencing of six great ape genomes (chimpanzee, bonobo, gorilla, Bornean orangutan, Sumatran orangutan, siamang) to achieve chromosome-level contiguity.
• Telomere-to-telomere sequencing of 215 gapless chromosomes with high accuracy.
• Comparative genomic analyses focusing on repetitive elements, segmental duplications, and complex loci.

Main Results:

• Generation of complete, accurate, and haplotype-resolved reference genomes for six ape species.
• Resolution of challenging genomic regions, including the major histocompatibility complex and immunoglobulin loci.
• Identification of novel gene families and evolutionary patterns in lineage-specific duplications, centromeres, and heterochromatin.

Conclusions:

• The new reference genomes provide unprecedented insights into the evolution of dynamic and repetitive genomic regions across great apes.
• This resource overcomes previous limitations in comparative genomics, offering a less biased view of ape evolutionary history.
• The study establishes a foundational resource for future research into the genetic basis of ape and human diversity.