At the age of 22-23 days, the most advanced germ cells are late spermatocytes (Clermont, 1972), allowing study of the whole meiotic phase
under our culture conditions (Staub et al.
It is not known how hormone-disrupting pollutants such as p,p'-DDE and PCBs interfere with the meiotic phase
, but infertile men often have an impaired chromosome synapsis and an increased frequency of chromosomes that are missing a recombination site (Martin 2006; Sun et al.
The results demonstrated that the expression of LDM during mouse oocyte meiotic maturation in vivo firmly rely on the meiotic phase
Knowledge of the meiotic phase
of the cell life cycle is important in understanding the radiosensitivity of the human oocyte.
The final extract was incubated for 45 min at 18 [degrees]C to initiate transition into the meiotic phase
of the cell cycle.
However, a genetic programme intrinsic to germ cells probably controls the progressive steps through mitotic, meiotic and post- meiotic phases
In some of these cells, the smallest bivalent showed a precocious separation, but exhibited a regular segregation in the subsequent meiotic phases