Around how many years ago did dogs diverge from wolves?

• A. 80,000 - 130,000 years ago
• B. 10,000 - 20,000 years ago
• C. 1.0 - 1.3 million years ago
• D. 500 - 1,000 years ago

Answer: (A)

Divergence time between dogs and wolves is estimated from genetic differences using a molecular clock and fossil calibrations, which helps us estimate when their lineages split. Many genetic studies place that split tens of thousands to over a hundred thousand years ago, so the range around 80,000 to 130,000 years ago aligns with those ancient-divergence estimates. This timing fits the deep genetic differences observed between dogs and wolves, which predate the onset of deliberate domestication. The other ranges are too recent or too ancient to match the established genetic and fossil evidence: 10,000–20,000 years ago would suggest a much closer, post-divergence relationship that doesn’t fit the lineage separation, and 1.0–1.3 million years ago would be beyond what the canine fossil record and typical mutation-rate estimates support. The 80,000–130,000-year window is therefore the best-supported choice.