part of
ends during
starts during
germinal vesicle
GV
The nucleus of the oocyte, it is enclosed in a nuclear envelope and contains neucleoplasm, in which the chromosomes and extranucleoli are embedded. It breaks down as the oocyte matures, being no longer visible by the first meiotic metaphase.
XAO:0000234
xenopus_anatomy
oocyte
nucleus
oocyte stage VI
mature egg stage