149: Tracing ancient Y chromosome variation

Kivisild T et al., Hum Genet (2017) 136:529–546 - Review of how high-throughput sequencing of ancient human remains has enabled genome-scale study of male-specific Y chromosome variation, the methodological challenges of working with ancient Y data, and examples of regional continuity and turnover in Y haplogroups across Eurasia and the Americas. Key terms: ancient DNA, Y chromosome, haplogroups, population history, high-throughput sequencing. Study Highlights:High-throughput sequencing and capture methods now allow recovery of ancient Y chromosome sequences but face challenges from low endogenous DNA, post-mortem damage, repetitive Y regions and ascertainment bias of SNP-capture panels. Shotgun sequencing is preferred where human DNA content is high, while capture approaches increase overlapping SNP coverage but cannot discover novel variants. Ancient Y sequences from late Pleistocene and Holocene Eurasia map to major non-African founding lineages and reveal shifts in haplogroup composition through the Neolithic and Bronze Age, notably later expansions of R1a/R1b. Ancient American Y data confirm early presence of Q and C lineages and show distinct Palaeo-Eskimo Q sub-clades. Conclusion:Ancient Y chromosome data complement autosomal and mitochondrial evidence by revealing male-lineage continuity and turnover across time and space, but robust inference requires attention to damage, coverage, repeat regions and ascertainment bias and broader sampling from underrepresented regions. Music:Enjoy the music based on this article at the end of the episode. Article title:The study of human Y chromosome variation through ancient DNA First author:Kivisild T Journal:Hum Genet (2017) 136:529–546 DOI:10.1007/s00439-017-1773-z Reference:Kivisild T. The study of human Y chromosome variation through ancient DNA. Hum Genet (2017) 136:529–546. DOI 10.1007/s00439-017-1773-z License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base – Stripe donations: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 Official website https://basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/cultural-hitchhiking-and-the-postneolithic-ychromosome-bottleneck QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2025-09-26. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript's coverage of ancient Y chromosome sequencing methods, damage authentication, and major demographic inferences (Europe, the Americas), plus Native American and Paleo-Eskimo lineages as described in the article.- transcript topics: HTS challenges for ancient Y chromosome (repeats and X-Y homology); Shotgun sequencing vs capture-based enrichment; Damage authentication via end-of-read C to T patterns; Y-chromosome haplogroup history in ancient Europe (G, H, I, J, R1a/R1b, C); Bronze Age Yamnaya migrations and male-biased turnover; Native American Y-chromosome lineages Q and C and Malta Boy dual ancestry QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 7- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- DOI in metadata matches the canonical article DOI- Article title in metadata matche... Chapters (00:00:14) - The genetic crash of the Neoles(00:02:43) - The genetic bottleneck of the Neolithic(00:09:08) - How patrilineal DNA helped explain human societies(00:14:28) - Base by base science podcast