Qhov txawv ntawm spermatogenesis thiab oogenesis yog spermatogenesis yog tsim cov phev (txiv neej gametes) thaum oogenesis yog tsim cov qe (poj niam gametes).
Ob leeg spermatogenesis thiab oogenesis feem ntau hu ua gametogenesis. Gametogenesis yog qhov sib faib mitotic thiab meiotic tshwm sim hauv gonads, tsim gametes. Cov gamete ntau lawm sib txawv ntawm cov txiv neej thiab poj niam; Yog li kev tsim cov gametes hauv cov txiv neej hu ua spermatogenesis, whereas cov poj niam hu ua oogenesis.
Spermatogenesis yog dab tsi?
Spermatogenesis yog tsim cov spermatids (sperm cells) hauv txiv neej testis. Cov txheej txheem pib los ntawm spermatogonium, uas yog genetic diploid. Spermatogonia tsim thawj spermatocyte (diploid) los ntawm mitosis. Qhov tshwm sim thawj spermatocyte dhau mus rau meiosis I los tsim ob lub hlwb haploid zoo ib yam hu ua Secondary spermatocytes.
Daim duab 01: Spermatogenesis
Txhua tus spermatocyte rov faib los ntawm meiosis II los tsim cov spermatids - ob lub hlwb haploid ntxhais. Yog li, ib qho spermatocyte thawj tsim tsim plaub qhov zoo tib yam haploid spermatids. Nws yuav siv li 6 lub lis piam mus rau cov spermatids kom sib txawv rau hauv cov spermatozoa paub tab.
Oogenesis yog dab tsi?
Oogenesis yog tsim cov qe hauv poj niam. Feem ntau, thawj theem ntawm oogenesis pib thaum ntxov embryonic theem thiab ua tiav tom qab puberty. Kev tsim cov ovum muaj cov qauv cyclic; qhov no feem ntau tshwm sim ib hlis ib zaug.
Daim duab 02: Oogenesis
Oogenesis pib los ntawm diploid oogonium hauv zes qe menyuam. Oogonia tsim thawj oocytes los ntawm mitosis thaum lub sij hawm ntxov embryonic kev loj hlob. Tom qab tag nrho, cov thawj oocytes pib hloov mus rau theem nrab oocytes, uas yog haploid, thaum lub sij hawm meiosis I. Ces thaum lub sij hawm meiosis II, theem nrab oocyte hloov mus rau lub zes qe menyuam, uas yog haploid. Thaum lub sij hawm ob qho tib si meiosis I thiab II, cytoplasm faib tsis sib npaug, ua rau ob lub hlwb tsis sib xws. Lub cell loj dhau los ua lub zes qe menyuam thaum lub me me dhau los ua lub cev polar. Qhov thib ob oocyte raug tso tawm ntawm zes qe menyuam thaum ovulation.
Dab tsi yog qhov zoo sib xws ntawm Spermatogenesis thiab Oogenesis?
- Ob leeg spermatogenesis thiab oogenesis pib los ntawm lub cell diploid.
- Lawv ua rau lub hlwb haploid kawg.
- Ob txheej txheem tseem ceeb heev hauv kev sib deev.
- Meiosis tshwm sim hauv ob txoj kev.
- Ob txheej txheem no tshwm sim hauv cov kab mob.
- Txhua tus txheej txheem muaj peb kauj ruam: kev sib npaug, kev loj hlob, thiab kev loj hlob.
Qhov txawv ntawm Spermatogenesis thiab Oogenesis yog dab tsi?
Spermatogenesis yog tsim cov phev (txiv neej gametes). Nws tshwm sim nyob rau hauv txiv neej testes. Nyob rau hauv sib piv, oogenesis yog tsim ntawm qe hlwb los yog ova (poj niam gametes). Nws tshwm sim hauv zes qe menyuam. Spermatogenesis pib los ntawm thawj spermatocyte thiab tsim plaub spermatozoa ua haujlwm thaum oogenesis pib los ntawm thawj oocyte thiab tsim ib lub zes qe menyuam. Qhov loj ntawm cov hlwb lawv tsim kuj yog lwm qhov sib txawv ntawm spermatogenesis thiab oogenesis; Cov phev me me thaum lub zes qe menyuam yog lub cell loj. Tsis tas li ntawd, cov phev muaj zog thaum lub zes qe menyuam tsis hloov.
Cytogenesis hauv spermatogenesis ua rau ob lub hlwb sib npaug thaum cytogenesis hauv oogenesis ua rau ob lub hlwb tsis sib xws. Ntxiv mus, tus qub pib thaum lub hnub nyoog laus thaum lub sij hawm tom kawg pib txawm ua ntej yug. Spermatogenesis cuam tshuam nrog kev loj hlob luv luv thiab tshwm sim tsis tu ncua tom qab kev laus thaum oogenesis cuam tshuam nrog kev loj hlob ntev thiab tshwm sim hauv cov qauv cyclic.
Summary – Spermatogenesis vs Oogenesis
Muaj ob hom gametogenesis: spermatogenesis thiab oogenesis. Ob qho txheej txheem pib los ntawm lub cell diploid thiab ua rau cov hlwb haploid thaum kawg. Qhov sib txawv tseem ceeb ntawm spermatogenesis thiab oogenesis tshwm sim los ntawm qhov tseeb tias spermatogenesis tsim cov txiv neej gametes thaum oogenesis tsim cov poj niam gametes.
