Abstract
Observations and measurements of maize sporogenous cell nuclei during premeiotic mitotic division cycles in fixed, sectioned and stained material suggest that a striking compression of the nucleus occurs, especially during early prophase of late (probably the last) premeiotic division. It is reasoned such a process could promote relocations of chromosome arms relative to each other prior to meiosis and facilitate strategic meeting or positioning of pairing partners, possibly in conjunction with membrane system or other anchoring of specialized regions.
