Gene Regulatory Machinery (Artistic Depiction) (IMAGE) Institute of Science and Technology Austria Caption This is an artistic depiction of gene regulatory machinery on the DNA that reads out gap gene concentration signals optimally to establish the precise seven-stripped patterns of pair rule gene expression in the fruit fly embryo. Credit Mariela Petkova Usage Restrictions with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.