Medical Definition of Pair rule gene
1.
A segmentation gene, expressed sequentially between gap genes and segment polarity genes. In development of Drosophila, a set of about 8 genes that are expressed only in alternate segments (odd or even) of the developing embryo. Loss of function mutants thus lack alternate segments.
Examples: even skipped (eve), fushi tarazu (ftz), hairy.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
Lexicographical Neighbors of Pair Rule Gene
Other Resources:
