To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2. MCC-deficient embryos struggle to divide. A bovine zygote following BUB1B MAO microinjection attempted to divide by forming multiple cleavage furrows, but never successfully completed cytokinesis. Molecular contribution to embryonic aneuploidy and karyotypic complexity in initial cleavage divisions of mammalian development Kelsey E. Brooks, Brittany L. Daughtry, Brett Davis, Melissa Y. Yan, Suzanne S. Fei, Selma Shepherd, Lucia Carbone, and Shawn L. Chavez Development 2022. 149:None-None; doi: 10.1242/dev.198341 Download Original Video