Yuav ua li cas germline cell faib?
Yuav ua li cas germline cell faib?

Video: Yuav ua li cas germline cell faib?

Video: Yuav ua li cas germline cell faib?
Video: La Yang Ft. Phuab Vaj - Yuav Ua Li Cas [Official MV] 2024, Kaum ib hlis
Anonim

Kab mob hlwb (poj niam txiv neej hlwb ) yog diploid (2n) hlwb hauv gonads ntawd faib los ntawm meiosis tsim plaub haploid (n) gametes. Yog gamete nqa ib kab mob Kev hloov pauv yog fertilized, kev hloov pauv yog theej los ntawm mitosis rau txhua tus cell nyob rau hauv cov me nyuam, nrog rau cov kab mob hlwb . Cov kev hloov pauv no tuaj yeem yog cov kab mob genetic disorders.

Ib yam li ntawd, tib neeg nug, puas cov kab mob germline faib los ntawm meiosis?

Kab mob kab mob nyob rau hauv meiosis los tsim haploid gametes uas tsuas muaj ib daim qauv ntawm txhua chromosome. Cov haploid gametes fuse los tsim ib lub embryo diploid uas loj hlob mus rau cov neeg laus. Muaj ob cell faib xwm txheej thaum meiosis.

Ib sab saum toj, puas mitosis tshwm sim hauv cov kab mob? Yog lawm, kab mob hlwb mus dhau mob mitosis kom nce tus naj npawb ntawm diploid hlwb ua ntej nkag mus rau gametogenesis los tsim gametes txuam nrog cov

Tom qab ntawd, cov kab mob germline yog dab tsi?

Hauv biology thiab noob caj noob ces, lub kab mob yog cov pejxeem ntawm ib tug multicellular kab mob hlwb uas dhau ntawm lawv cov khoom siv caj ces mus rau progeny. Cov hlwb ntawm kab mob feem ntau hu ua kab mob hlwb . Piv txwv li, gametes xws li phev los yog qe yog ib feem ntawm cov kab mob.

Cov kab mob primordial los ntawm qhov twg?

Cov kab mob primordial , qhov ntxov tshaj plaws paub ua ntej ntawm gametes, sawv sab nraum gonads thiab tsiv mus rau hauv gonads thaum ntxov embryonic kev loj hlob. Tib neeg cov kab mob primordial thawj zaug ua tau yooj yim pom ntawm 24 hnub tom qab fertilization nyob rau hauv lub endodermal txheej ntawm lub yolk sac (Fig.

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