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.meg File Extension

Developer: MEGA Team
File type: MEGA Data File
You're here because you have a file that has a file extension ending in .meg. Files with the file extension .meg can only be launched by certain applications. It's possible that .meg files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .meg file?

Files using the MEG extension are known as MEGA Data Files or the genetic data files the program MEGA uses. This file extension was developed by the MEGA Team and is categorized as data files. MEG files are saved in plain text format wherein they refer to files containing DNA codes, genetic distance data as well as other kinds of genetic data and sequences. MEG files also play a big role in the performance of genetic computations as well as in the formation of phylogenetic trees that are necessary for genetic relationship inferences. MEG files are opened with MEGA, an application used to conduct automatic and manual sequence alignment, phylogenetic tree inferring, estimating molecular evolution rates, performing evolutionary hypotheses tests, etc. MEGA runs on all Windows OS and it stands for Molecular Evolutionary Genetics Analysis. The BSEdit can also be used to open MEG files. This application is a multiple sequence alignment editor that is used for handling multiple alignments.

how to open a .meg file?

Launch a .meg file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .meg file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .meg files aren't yet associated with it. In this case, when you try to open a .meg file, you can tell Windows which application is the correct one for that file. From then on, opening a  .meg file will open the correct application. Click here to fix .meg file association errors

applications that open a .meg file



The acronym MEGA stands for Molecular Evolutionary Genetics Analysis, which is the sequence alignment viewer and editor used in phylogenetic analysis and data mining among other applications. Mainly, this software's functions and tools are designed to help scientists and students trace the ancestral origins of different species. Users drag and drop branches into the topology editor when they create phylogenetic trees of proteins. Researchers make use of scripts and external applications that connect to MEGA's computational core through a command line interface. This helps scientists automate the analyses of a large number of multiple sequences. The editor's toolbar menu has been updated to include more formatting options and provide a direct access to notation tools, linear modeling modules and statistical analysis methods. The MEGA version for Macintosh requires the X11 program that came with the Mac OSX Leopard installation package.


BSEdit is a Windows-based viewer and WYSIWYG editor of protein alignments and DNA/RNA sequences. This multiple sequence alignment tool can open and edit project files and export them to ClustalW, Fasta, Phylip, PIR, NEXUS, GCG, and MEGA file formats. The software can handle simultaneous views and edits of large multiple sequences displayed in separate windows. Users may want to edit alignments manually or use the drag-and-drop function to rearrange sequences. BSEdit runs on the Windows OS, but WinXP users must install .NET Framework 3.0 into the system first before they can use it. The editor saves annotations and comments into the project file and supports single sequence and whole alignment edit modes. In particular, this software can perform a comparative analysis on a specific region in a sequence to check its variation patterns. It also applies circular adjustments on genome alignments.

a word of warning

Be careful not to rename the extension on .meg files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .meg. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.

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