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A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
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A phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure. It shows the boundaries between solid, liquid, and gas phases and the conditions at which these phases coexist in equilibrium. An area in a phase diagram represents a single phase, whereas lines or phase boundaries represent the equilibrium between two phases.In the phase diagram of water, the boundary line between the solid and liquid states illustrates...
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inPHAP: interactive visualization of genotype and phased haplotype data.

Günter Jäger1, Alexander Peltzer, Kay Nieselt

  • 1Integrative Transcriptomics, Center for Bioinformatics, University of Tübingen, Sand 14, 72076 Tübingen, Germany. guenter.jaeger@uni-tuebingen.de.

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Summary

We developed inPHAP, a novel interactive visualization tool for exploring phased haplotype data. This tool aids in understanding genomic variations and their links to disease, addressing a current gap in bioinformatics visualization capabilities.

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Area of Science:

  • Genomics
  • Bioinformatics
  • Computational Biology

Background:

  • Understanding individual genomes requires analyzing variations that influence phenotype and disease.
  • Genotype data alone is insufficient; phase information is crucial for accurate interpretation.
  • Existing interactive visualizations lack support for phased haplotype data.

Purpose of the Study:

  • To introduce inPHAP, an interactive visualization tool designed for genotype and phased haplotype data.
  • To provide a solution for exploring complex genetic variations and their associations.

Main Methods:

  • Developed inPHAP, featuring interactive functionalities like zooming, sorting, filtering, and aggregation.
  • Applied inPHAP to Phase 1 of the 1000 Genomes Project phased haplotype dataset.
  • Demonstrated visualization of genetic variations at both population and individual levels.

Main Results:

  • inPHAP enables interactive exploration of both unphased and phased haplotype data.
  • The tool successfully visualized genetic variations in disease-related loci using real-world data.
  • inPHAP's scalability allows handling large datasets up to 100 GB.

Conclusions:

  • inPHAP is the sole visual analytical tool currently supporting interactive exploration of phased haplotype data.
  • The tool bridges the gap left by existing visualizations for unphased genotype data.
  • inPHAP offers advanced features for visualizing phased data and is available for download.