blastocyst is the stage of prophase i in which mammalian oogenesis can arrest for years.
blastocyst is the stage of prophase i in which mammalian oogenesis can arrest for years.
the stage of prophase i in which mammalian oogenesis can arrest for years is?
blastocyst
in human fetal oogenesis, all developing oocytes develop to this stage and are arrested in prophase i before birth. this suspended state is referred to as the "dictyotene stage" or dictyate. it lasts until meiosis is resumed to prepare the oocyte for ovulation, which happens at puberty or even later.









































section::::phases.:meiosis i.:prophase i.:diakinesis.
meiosis
section::::mitotic prophase.:beginning of nucleoli breakdown.









































the nucleoli begin to break down in prophase, resulting in the discontinuation of ribosome production. this indicates a redirection of cellular energy from general cellular metabolism to cellular division. the nuclear envelope stays intact during this process.









































section::::meiotic prophase.









































meiosis involves two rounds of chromosome segregation and thus undergoes prophase twice, resulting in prophase i and prophase ii. prophase i the most complex phase in all of meiosis because homologous chromosomes must pair and exchange genetic information. prophase ii is very similar to mitotic prophase.









































section::::meiotic prophase.:prophase i.
prophase