Menu

Dogs Have a Single Genetic Origin: Study

A new genetic analysis contradicts a 2016 study proposing that our canine companions were domesticated from two distinct populations.

Jul 18, 2017
Diana Kwon

PIXABAY, 3194556Modern dogs may have originated from a single group of wolves domesticated in Europe around 40,000 years ago, according to a study published today (July 18) in Nature Communications.

To analyze the genetic origin of dogs, researchers first sequenced the genomes from the remains of two Neolithic dogs, one around 7,000-years-old and another approximately 4,700-years-old, discovered at archeological sites in Germany. They then compared the genetic information from these two canines—and the DNA of 5,000-year-old dog remains found in Ireland—to that of 5,649 modern dogs and wolves.

According to the study’s authors, the results of this analysis suggest that all modern-day dogs originated from a single group of wolves domesticated around 40,000 years ago in Europe.

“Given the high degree of sharing of sweeps [genetic signatures] between these ancient samples and modern samples, it seems clear that these dogs descend from a single domestication origin,” Adam Boyko, a geneticist at Cornell University who was not involved in the work, told The Washington Post in an email.

These results contradict the findings reported in a 2016 paper in Science, which suggested that dogs were domesticated twice from distinct wolf populations in Europe and East Asia. One of the coauthors of that study, Greger Larson, an Oxford University evolutionary biologist, tells The Washington Post that the new research doesn’t rule out the possibility of two separate domestication events. “They don't provide an alternative scenario” for the “ridiculously deep split” between Eastern and Western dog genetics, Larson, who was not involved in the latest study, adds.

See “Dog Domestication History Clarified

“Genomic analysis of ancient samples is a relatively new field, we are just at the beginning,” Laura Botigué, a coauthor of the Nature Communications study and a postdoctoral researcher at Stony Brook University, told the International Business Times UK. “To settle the issue of when and where dogs were first domesticated, we would need older samples from other geographical regions.”

See “Genetic Analysis Reveals the Evolutionary History of Dogs

September 2018

The Muscle Issue

The dynamic tissue reveals its secrets

Marketplace

Sponsored Product Updates

Enabling Genomics-Guided Precision Medicine

Enabling Genomics-Guided Precision Medicine

Download this eBook from Qiagen to learn more about the promise of precision medicine and how QCITM Interpret can help deliver better care with better knowledge.

Best Practices for Sample Preparation and Lipid Extraction from Various Samples

Best Practices for Sample Preparation and Lipid Extraction from Various Samples

Download this white paper from Bertin Technologies to learn how to extract and analyze lipid samples from various models!

Bio-Rad Launches CHT Ceramic Hydroxyapatite XT Media and Nuvia HP-Q Resin for Process Protein Purification

Bio-Rad Launches CHT Ceramic Hydroxyapatite XT Media and Nuvia HP-Q Resin for Process Protein Purification

Bio-Rad Laboratories, Inc. (NYSE: BIO and BIOb), a global leader of life science research and clinical diagnostic products, today announced the launch of two new chromatography media for process protein purification: CHT Ceramic Hydroxyapatite XT Media and Nuvia HP-Q Resin.

Immunophenotypic Analysis of Human Blood Leukocyte Subsets

Immunophenotypic Analysis of Human Blood Leukocyte Subsets

Download this application note from ACEA Biosciences, Inc., to find out how to perform an immunophenotypic analysis of a human blood sample utilizing 13 fluorescent markers using a compact benchtop flow cytometer equipped with 3 lasers!