Plant Embryo (IMAGE) University of Zurich Caption This is a young plant embryo (8-cell stage) in a developing seed of Arabidopsis thaliana (thale cress). At this stage maternal gene activity predominates, while paternal genes will get activated gradually as embryogenesis proceeds. Credit Michael T. Raissig, Institute of Plant Biology 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.