The nucleus splits so that half of its chromosomes go to one cell and half to another.
It is emitted in certain radioactive-decay processes and in fission, the process in which a nucleus splits into two smaller nuclei.
The divisions are mitotic i.e., each chromosome in the nucleus splits into two daughter chromosomes, so that the two daughter blastomeres retain the diploid number of chromosomes.
Nuclear reactors operate on the principle of nuclear fission, the process in which a heavy atomic nucleus splits into two smaller fragments.
The nuclear membrane develops folds, and the nucleus splits into a number of membrane-bound, ultrastructurally well-preserved fragments, which are shed and promptly taken up by specialized scavenger cells or even by ordinary cells in the neighbourhood.
Based on the catalogs of comets capable of nucleus splitting and comets with abnormal tail 30 short-Jupiter-family comets were identified, which are capable of producing meteoroid swarms that do not intersect the Earth's orbit, but are of interest for drafting of space missions and studying the distribution of meteoroid streams.
With a clever experiment, researchers have shown that the beryllium-10 nucleus splits spontaneously--and when it does, it behaves like a tiny molecule, with a pair of neutrons flying between the pieces to make bonds similar to electron bonds between atoms.
If more uranium-235 is added to the assemblage, the chances that one of the released neutrons will cause another fission are increased, since the escaping neutrons must traverse more uranium nuclei and the chances are greater that one of them will bump into another nucleus and split it.
Nuclear fission is the opposite process, causing a nucleus to split into two smaller nuclei usually through radioactive decay.
Eight weeks later in Berlin, two scientists discovered the process of nuclear fission, in which a heavy nucleus is split in half by a neutron and releases a large amount of energy.
