Oogenesis yog kev tsim ntawm lub qe (tseem hu ua ovum lossis oocyte) hauv poj niam foetus. Oogenesis pib nyob rau hauv lub fetus ntawm ib ncig ntawm 7 lub lis piam 'gestation, thaum primordial germ cells colonize lub zes qe menyuam tshiab.
Puas oogenesis pib thaum puberty?
Oogenesis. Oogenesis pib ua ntej yug tab sis tsis tiav kom txog thaum tom qab puberty. … Oogenesis pib ntev ua ntej yug thaum ib tug oogonium nrog cov diploid tooj ntawm chromosomes undergoes mitosis. Nws tsim ib tug ntxhais diploid cell hu ua thawj oocyte.
Yuav ua li cas yog thawj theem ntawm oogenesis?
Thawj theem yog oocytogenesis thaum lub sijhawm ua ntej oocytes tau tsim tom qab mitotic cell division. Cov txheej txheem no tshwm sim nyob rau hauv uas lub fetus nyob ib ncig ntawm nees nkaum lub lis piam ntawm gestation. Qhov thib ob theem ntawm oogenesis yog ootidogenesis thaum lub sij hawm thawj oocyte yog tsim tom qab thawj puag ncig ntawm meiosis (meiosis I).
Lub sijhawm ntawm oogenesis yog dab tsi?
Oogenesis tshwm sim hauv tsuas yog 12 hnub, yog li cov neeg saib mob hlwb tau metabolically nquag nquag nyob rau lub sijhawm no.
3 theem ntawm oogenesis yog dab tsi?
Kev tsim ntawm ovum yog nrov hu ua oogenesis. Nws yog poj niam gamete. Txoj kev loj hlob ntawm cov theem sib txawv ntawm qhov tsis paub tab yog qhov tsim nyog. Muaj peb theem: multiplication, loj hlob thiab maturation.
