Chromosome motion during mitosis can be explained by combining the facts available about the equilibrium between the mitotic spindle and its subunits with the postulate that the recently described ...
PLK-1 initiates a process in two protein groups, leading to creation of new CENP-A proteins. These CENP-A proteins ensure that divided genetic information is kept intact during mitosis.
As part of this process, bulges or protrusions form in the membrane, which then pinch off and are recycled by the cell. A study has examined this protrusion process using computer simulations.
When hybrid seeds fail to develop, the reason often lies in the endosperm—a tissue in plant seeds that provides nutrients to the growing embryo, much like the placenta nourishes mammalian embryos.