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Updated: Jun 1, 2026
08:57
Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
Published on: August 14, 2018
Genomic data reject the hypothesis of a prosimian primate clade
Natalie M Jameson1, Zhuo-Cheng Hou, Kirstin N Sterner
1Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA.
Journal of Human Evolution
|May 31, 2011
Summary
This study confirms tarsiers belong with anthropoids in the haplorrhine clade, resolving a century-old primate phylogeny debate. New genomic data clarifies primate evolutionary history and divergence times.
Area of Science:
- Primate Phylogenetics
- Molecular Evolution
- Genomics
Background:
- The evolutionary placement of tarsiers within primates has been debated for over 100 years.
- Previous morphological and molecular studies offered limited support for grouping tarsiers with strepsirrhines or anthropoids.
- Resolving tarsier phylogeny is crucial for understanding primate evolution.
Purpose of the Study:
- To determine the phylogenetic position of tarsiers within the order Primates using whole-genome data.
- To estimate divergence times among major primate clades.
- To investigate nucleotide substitution rates across primate lineages.
Main Methods:
- Utilized the whole genome assembly of the Philippine tarsier (Tarsius syrichta).
- Performed a multiple sequence alignment of 1.26 million base pairs from 1078 orthologous genes.
- Applied local relaxed molecular clock methods for divergence time estimation.
Main Results:
- Provided strong statistical support for a haplorrhine clade including tarsiers and anthropoids.
- Estimated the most recent common ancestor of extant Primates between 64.9 and 72.6 million years ago.
- Found that anthropoids exhibit slower nucleotide substitution rates compared to strepsirrhines and tarsiers.
Conclusions:
- The study definitively places tarsiers within the haplorrhine clade, resolving a long-standing phylogenetic question.
- Provides robust divergence time estimates for key primate lineages.
- Offers a genomic framework for reconstructing ancestral primate traits and understanding evolutionary patterns.
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