Y-DNA haplogroup clade finder

The Y chromosome passes from father to son almost unchanged, so the mutations it carries accumulate in a single line and define a branching tree. Placing you on that tree means reading which known branch-defining variants your file calls in the derived state and finding the deepest branch all of them agree on. This tool reads the Y-chromosome rows out of a 23andMe, AncestryDNA or MyHeritage export, or out of a whole-genome VCF from a sequencing kit, compares them against the published tree, and reports the clade you reach along with the variants that put you there.

Your paternal haplogroup is a line, not an ethnicity. It traces one path through your ancestry — your father's father's father — and says nothing about the rest of your genome, which is where almost all of your ancestry lives. Two people can share a haplogroup and differ everywhere else, and siblings of different sexes do not both carry one.

The hard limit is coverage. Consumer chips genotype a sparse, fixed set of Y positions chosen years ago, so the depth you can reach is set by which markers your file happens to contain rather than by your actual lineage. A shallow result usually means the file lacks the markers that would resolve further, not that your line stops there — and where the evidence thins out, the result says so instead of guessing at a deeper branch. Only sequencing reads the whole chromosome, and a whole-genome VCF carries every Y position the sequencer covered, so it usually resolves several branches deeper than a chip export. Runs need a free, email-verified account, and the uploaded file is deleted after the analysis.

Suppose a 23andMe v5 file comes back as R-Z2103, with the supporting variants listed as derived, the branches beneath it marked untested, and a map of ancient men who carried the same branch. Read it inside out. The terminal call means every branch-defining marker on the path from the root through R-M269 down to Z2103 that your file contains came back derived, and nothing below Z2103 was testable — not that your line ends there. A man whose actual lineage sits five branches deeper gets exactly this result from a chip that stops testing at Z2103.

The untested list is the honest half of the result and the half worth reading twice. It tells you precisely what a deeper test would resolve: if the branches below your call are dense with named subclades, dedicated Y sequencing has real information to add; if your call already sits deep on a thin branch, sequencing may add little but a private variant. The ancient-carrier map reads under the same discipline as everywhere on this site — men on your branch are evidence of a shared paternal lineage, never proof of a named forefather.

One expectation to calibrate by vendor: chips differ sharply in Y coverage, and some products carry no Y rows at all — the file check reports the Y row count before you upload anything here. A result that seems shallow for your known lineage is nearly always the chip's marker selection, resolvable by sequencing, not a genealogy problem.

The community's long-standing free options do versions of this job. YSEQ's Clade Finder places uploaded files against a tree it maintains; the venerable Morley predictor infers a haplogroup from STR values rather than SNPs, an older technique with correspondingly coarser results. This tool's differences are the tree it reads against — the same public haplotree browsable branch by branch on this site, over 109,000 named branches — the explicit untested-branch reporting, and the ancient-carrier map drawn from the AADR reference panel, with the file deleted after the run.

The step up from every chip-based tool, ours included, is dedicated sequencing: FamilyTreeDNA's Big Y and full-genome tests read the chromosome rather than a marker panel, resolve private variants, and place men into matching groups — a genuinely different product for a genuinely different budget. The honest sequence for most people: read what your existing file supports for free here, look at what remains untested, and decide whether the deeper branches matter enough to sequence. A haplogroup is one paternal thread either way; the rest of your ancestry lives in the autosomes, where the admixture and distance tools read it.