Insect (IMAGE) University of Washington Caption An insect in the fourth nymphal stage of development (Figure A) progresses normally to the fifth development stage (Figure B). However, if a gene called broad is suppressed in the first half of the fourth stage, the nymph moves to the fifth stage but keeps pigmentation patterns and other characteristics of the fourth stage (Figure C). Credit Photo credit: Deniz Erezyilmaz Usage Restrictions None 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.