Oogenesis Class Notes

University:
Swansea University
Course:
PM-133 | Evolutionary and Molecular Genetics
Academic year:

2023
Views:

189

Pages:

2
Author:

Amal J.

OogenesisStarts from 5th month of gestationi° avestat diplotone stage of I meiosisFmillions of organia are producedw gestation periodfrom this How million400 ovulated2DOogoniaoogoniamitosi2n2n2Doogonial mothermitosisloocymeionsI oocytenDLHupto 7 millionmeiosi II0ooogoniaininpolarbody2nmeiosisassested @ diplotene due to absenebaploid set of ioocyteof lotenizing bormone (LH)Aa poperlyLH comes [mechaiism(not progestrone) understed notprogression ofMeiosis I mitosis2Diliadegeadesgio2n+vendnotsmalllovespeclyiooaytepolar body Cleantamount of aytoplanslarge 2nioocyte Ppolar bodymitorismeions.arrested2°cocyteninmetapolarbodynphasenoIIndipolar bodies2polarbody2°cocyletotally 3polar bodyMetaphase assetMetaphase arrestremoved @ time of1 oocyte1 Eggfertilization, polarbody detachesAxif:from 2°00cyte aftertGiredins xsperm entersawngolgidervide vesiclessougle cyloplancortical granulesretritive companelseg yolkProteolyficenzyutrNin IRNA,Securebio (investimatehumanVitellinemanaienvelope ( 2ona pellucida).envelopevalibeate.Egg planmamembra2° envelopehuman - cumolus layerInner most layerSeaurchin - Eggjecly.of cumulus (human)Coroba radiata (radiatingcrowngranuloxacells