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Iberian Peninsula: Neolithic Iberian → Chalcolithic Iberian → Bell Beaker culture → Bronze Age Iberian

From the Neolithic to the Copper Age the male lines of Iberia barely change: 77% in common, with I2a, I2b and G2a in the lead both times. The Bell Beaker men share only 19% with the local Copper Age. The peninsula's Bronze Age, by contrast, repeats the Beakers at 85%, and 94% of its samples are R1b.

Order the cultures from oldest to latest

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Iberian Peninsula: Y haplogroup shares of cultures that followed one another
How to read the chart

Each sample is cut to its ancestor at the chosen depth; a sample whose test did not reach that deep stays on its own branch. An asterisk: in this culture the branch also has samples further down. “A → B” is the share of A's samples with a branch of the same line in B: the same branch, its ancestor or a branch under it. A sample whose test stopped higher could belong to any branch under it, so it matches them. The frequency overlap sums the smaller share of every shared branch, such a sample's share split among the branches under it by their shares in both cultures together; it is less swayed by single samples. By age, a sample moves up to the ancestor whose branch had already split off by the chosen year (branch ages are Discover estimates), so every letter is cut at the same time. “Auto” takes the time of the oldest culture chosen, or earlier if a column would not read otherwise. Maternal lines follow the Mitotree tree of FTDNA Discover.

The chain in numbers #

Y-DNA, tree depth 10. Similarity is the overlap of branch frequencies with the culture before.

The chain in numbers
Culture Samples Leading groups Similarity with the previous
Neolithic Iberian 47 I2a 48.9%, I2b 25.5%, G2a 17.0% —
Chalcolithic Iberian 71 I2a 33.8%, I2b 25.4%, G2a 16.9% 77.2%
Bell Beaker culture 147 R1b 81.0%, I2a 5.4%, G2a 5.4% 18.9%
Bronze Age Iberian 33 R1b 93.9%, I2b 3.0%, G2a 3.0% 85.0%

Other chains