Ace2 in Yeast Cells (VIDEO) Rockefeller University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption When budding yeast cells divide, scientists have found that a gene regulator called Ace2 (yellow) is present only in half of the offspring, an observation that explains a key difference in how cells decide if they are ready to divide. Credit Rockefeller University 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.