Exceptions do exist, but they will be discussed elsewhere . It is a rather complicated process that seems to be necessary to distribute the substance of the mother nucleus evenly on both daughter nuclei. Modern microscopic techniques, especially phase contrast and interference contrast microscopy allow today to make the process of the division of the nucleus visible in a lot of cell types. Impressing educational films for schools on this process exist, so that every student of biology should actually be familiar with it even before the beginning of his study. Even though did he notice that the nuclei stretch before or at the beginning of mitosis and take on a spindly shape.
Longitudinal structures become visible.
He saw states, where they shortened and finally appeared as compact little rods. After the prophase are the chromosomes arranged at the plane of cell division forming thereby the equatorial plane . This state is called the metaphase . Consequently do they separate in opposite directions to form the two daughter nuclei. The phase of separation is termed anaphase , the formation of the daughter nuclei telophase .