Bioinformatics glossary – X

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

In mammals, the sex chromosome that is found in two copies in the homogametic sex (female in humans) and one copy in the hererogametic sex (male in humans).

The XX line in database entries contains no data or comments. It is used instead of blank lines to avoid confusion with the sequence data lines.

Popular open source search engine.

An experimental technique that diffracts X-rays in crystals to determine the 3D structure of molecules

Extensible Markup Language (XML) defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.

A general numerical tool for simulating, animating, and analysing dynamic systems. http://www.math.pitt.edu/~bard/xpp/xpp.html