Abstract
When embryos of Paracentrotus lividus are actinomycin D treated immediately after fertilization, the vegetal-animal mitotic gradient is completely disrupted. On the other hand, if the treatment is started at or after the 16-cell stage (i.e., after the segregation of the micromeres), the mitotic gradient is not affected. The hypothesis is advanced that actinomycin D inhibits a transcriptional event in the micromeres which regulates the synchronization of the cell divisions in the early cleavage stages.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
