bio-comparative-genomics-introgression-detection

bio-comparative-genomics-introgression-detection is a skill for Claude Code, Codex from PKU-YuanGroup/OpenAI4S. It costs 241 tokens per session (8,351 once invoked), scanned A, a copy of bio-comparative-genomics-introgression-detection, MIT.

A set of methods for detecting introgression, where genes move between species or populations through interbreeding. It uses patterns in DNA variation and evolutionary trees to test for admixture.

In plain words
What is it for?
Use it to test population groups for admixture, identify likely sources of exchanged DNA, estimate admixture patterns, and compare competing evolutionary histories.
Why use it?
It helps separate ordinary shared ancestry from later genetic exchange, which can make species histories appear misleading.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to test population groups for admixture, identify likely sources of exchanged DNA, estimate admixture patterns, and compare competing evolutionary histories.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/pku-yuangroup/openai4s/bio-comparative-genomics-introgression-detection
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add PKU-YuanGroup/OpenAI4S --skill bio-comparative-genomics-introgression-detection
Clone the repo
git clone --depth 1 https://github.com/PKU-YuanGroup/OpenAI4S

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for bio-comparative-genomics-introgression-detection

README.md
[![agentmods](https://agentmods.dev/badge/skills/pku-yuangroup/openai4s/bio-comparative-genomics-introgression-detection/github.svg)](https://agentmods.dev/skills/pku-yuangroup/openai4s/bio-comparative-genomics-introgression-detection)
Your own site
<a href="https://agentmods.dev/skills/pku-yuangroup/openai4s/bio-comparative-genomics-introgression-detection"><img src="https://agentmods.dev/badge/skills/pku-yuangroup/openai4s/bio-comparative-genomics-introgression-detection/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for bio-comparative-genomics-introgression-detection

Your own site · 80×15
<a href="https://agentmods.dev/skills/pku-yuangroup/openai4s/bio-comparative-genomics-introgression-detection"><img src="https://agentmods.dev/badge/skills/pku-yuangroup/openai4s/bio-comparative-genomics-introgression-detection.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 241 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 8,351 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 97% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00241 $0.08351
Opus 5 $0.00120 $0.04176
Sonnet 5 $0.00048 $0.01670
Haiku 4.5 $0.00024 $0.00835

Measured 8d ago against content hash 2ffe8f27e4e9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

bio-comparative-genomics-introgression-detection scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/dsuite_abba_baba_workflow.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

97% identical to bio-comparative-genomics-introgression-detection — 12 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/bioskills/bio-comparative-genomics-introgression-detection/SKILL.md · 489 lines

How it starts

The opening of the file, as written. The whole thing — 489 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Version Compatibility

Reference examples tested with: Dsuite 0.5+ (millanek/Dsuite; Malinsky 2021 Mol Ecol Res 21:584; ABBAclustering option from Koppetsch-Malinsky-Matschiner 2024 Syst Biol), HyDe 0.4.3+ (Blischak 2018 Syst Biol 67:821), QuIBL (Edelman 2019 Science 366:594), TreeMix 1.13+ (Pickrell & Pritchard 2012 PLoS Genet 8:e1002967), sprime (Browning 2018 Cell 173:53), Twisst (Martin & Van Belleghem 2017 Genetics 206:429), PhyloNet 3.8.2+ (NakhlehLab/PhyloNet; Than-Ruths-Nakhleh 2008 BMC Bioinf 9:322) and PhyloNetworks 0.16+ (JuliaPhylo/PhyloNetworks; Solis-Lemus, Bastide & Ane 2017 MBE 34:3292), qpAdm / qpGraph (AdmixTools v2.0+; Maier 2023), ADMIXTOOLS2 R wrapper (Maier 2023 eLife 12:e85492), MaCS-like simulators (msprime 1.3+ for testing), bcftools 1.21+, samtools 1.21+, vcftools 0.1.16+, R 4.4+. See upstream Dsuite docs for visualization helpers.

Before using code patterns, verify installed versions match. If versions differ:

  • CLI: Dsuite --version; treemix --help; qpDstat --help (AdmixTools)
  • Python: pip show msprime hyde
  • R: packageVersion('admixtools')

If code throws Dsuite SETS file format error, TreeMix matrix singular, qpAdm rotation failed, these tools share strict input requirements: Dsuite needs a SETS file mapping samples to populations + an outgroup; TreeMix needs allele-frequency matrix; qpAdm needs ind / snp / geno trio (EIGENSTRAT format).

Introgression and Admixture Detection

"Has there been gene flow between these species / populations?" -> Tests for inter-population admixture span site-frequency (ABBA-BABA, f4), tree-topology (Dsuite f-branch, QuIBL, Twisst), explicit-network (PhyloNet), and haplotype-tract (sprime) approaches. The fundamental confounder is incomplete lineage sorting (ILS): under a symmetric tree with no gene flow, the ABBA and BABA patterns occur with equal frequency from ancestral polymorphism. A significant D-statistic indicates EITHER (a) introgression, OR (b) ancestral structure, OR (c) sampling from a ghost lineage -- additional evidence is required to distinguish (Green 2010 Science 328:710; Durand 2011 MBE 28:2239; Eriksson & Manica 2012 PNAS 109:13956). For high-confidence claims, combine D-statistic with f-branch mapping (assigns admixture to specific branches), Twisst / QuIBL topology-weighting, and TreeMix migration edges.

Read the full file on GitHub · 489 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 489 lines · 241 tokens per session scan A 2ffe8f27e4e9

Subscribe to this mod's changes

bio-comparative-genomics-introgression-detection is a skill published in the GitHub repository PKU-YuanGroup/OpenAI4S (403 stars, last pushed yesterday), licensed MIT. It adds 241 tokens to every session and 8,351 once invoked, about $0.0012 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to bio-comparative-genomics-introgression-detection, differing in 12 lines, and is treated as a copy.

Related

Other skills, from other repositories

boltz-structure-prediction

Boltz-1 / Boltz-2 structure prediction for proteins, complexes, and ligand-aware validation. Use this skill when: (1) Predicting protein complex structures, (2) Validating designed binders, (3) Need open-source alternative to AF2, (4) Predicting protein-ligand complexes, (5) Using local GPU resources. For QC…

zongtingwei/Bioclaw_Skills_Hub · 121 tokens

imaging-data-commons

Query and download public cancer imaging data from NCI Imaging Data Commons using idc-index. Use for accessing large-scale radiology (CT, MR, PET) and pathology datasets for AI training or research. No authentication required. Query by metadata, visualize in browser, check licenses.

synthetic-sciences/openscience · 62 tokens

flow-cytometry-analysis

Complete flow cytometry analysis pipeline. FCS file handling, compensation, manual/automated gating, immunophenotyping, CFSE proliferation analysis, cell cycle analysis (Dean-Jett-Fox), and apoptosis assays. Extends flowio with analytical workflows. For raw FCS parsing only use flowio.

synthetic-sciences/openscience · 67 tokens

glycobiology

Glycosylation site prediction and glycobiology analysis. N-glycosylation motif finding, O-glycosylation hotspot prediction, glycan structure resources. Lightweight, pure Python. For protein function queries use uniprot-database; for structure analysis use alphafold-database.

synthetic-sciences/openscience · 67 tokens

cellxgene-census

Query the CELLxGENE Census (61M+ cells) programmatically. Use when you need expression data across tissues, diseases, or cell types from the largest curated single-cell atlas. Best for population-scale queries, reference atlas comparisons. For analyzing your own data use scanpy or scvi-tools.

synthetic-sciences/openscience · 67 tokens

rowan

Cloud-based quantum chemistry platform with Python API. Preferred for computational chemistry workflows including pKa prediction, geometry optimization, conformer searching, molecular property calculations, protein-ligand docking (AutoDock Vina), and AI protein cofolding (Chai-1, Boltz-1/2). Use when tasks involve…

synthetic-sciences/openscience · 115 tokens