Learn to use Madeline 2.0 Pedigree Drawing Engine, a free, web-accessible tool for drawing simple and complex pedigrees. You can use Madeline 2.0 to visualize data previously entered into other formats, like Cyrillic GED, or enter data de novo and dynamically build pedigrees online. This tool uses a recursive algorithm to draw nuclear families and includes features to maximize readability and aesthetics. If your research involves generation of human pedigrees, simplify this process with this freely available tool.

You will learn:

  • to generate pedigrees representing simple, nuclear families with singles and multiple births
  • to introduce complex family arrangements including consanguineous marriages and multiple spouses
  • to track multiple phenotypes over several generations


This tutorial is a part of the tutorial group Human variations. You might find the other tutorials in the group interesting:

GAD: Genetic Association Database: An archived database associating human genes and polymorphisms with diseases

DrugBank: A chemoinformatics and bioinformatics resource

DGV: Database of Genomic Variants: Database of Genomic Variants, DGV, catalogs and displays structural variation in the human genome

OMIM: Online Mendelian Inheritance in Man (OMIM): A database of human genes, genetic diseases and disorders

CGAP: Characterize the molecular genetic changes that cause a normal cell to become a cancer cell

ENCODE Foundations: ENCyclopedia of DNA Elements

GeneSNPs: An integrated view of gene structure and SNP variations

NIEHS SNPs: National Institute for Environmental Health Sciences Environmental Genome Project (EGP) SNPs

HapMap: HapMap, a database and analysis resource of human variation

Genetics Home Reference: A collection of data describing the effects of genetic variability on human health and disease

dbGaP: A database of genotypes and phenotypes with extensive variation data and clinical details

SeattleSNPs: Human SNPs in genes

dbSNP: NCBI's SNP database

GeneTests: GeneTests, a current, comprehensive genetic testing resource


Variation & Medical : Resources that include information about sequence variation, phenotypes, or medically-relevant conditions.


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Recent BioMed Central research articles citing this resource

Shaw D Paul et al., Helium: visualization of large scale plant pedigrees Imaging, image analysis and data visualization. BMC Bioinformatics (2014) doi:10.1186/1471-2105-15-259