Fertilization: Cov phev thiab qe tsim ib Zygote Thaum cov phev cell nkag mus thiab fertilizes qe, cov ntaub ntawv caj ces sib txuas. 23 chromosomes los ntawm cov phev khub nrog 23 chromosomes nyob rau hauv lub qe, tsim ib tug 46-chromosome cell hu ua zygote. Lub zygote pib faib thiab muab faib.
Thaum fertilized ovum hloov mus ua zygote ?
Lub fusion ntawm ob lub hlwb no hu ua fertilization thiab nws tsim ib lub cell diploid nrog 46 chromosomes - ob npaug ntawm cov nyiaj pom nyob rau hauv txhua gamete. Lub qe fertilized tam sim no hu ua zygote thiab tsuas yog muaj qhov zoo ntawm DNA xav tau rau tib neeg txoj kev loj hlob.
ovum ua zygote li cas?
Nyob rau hauv tib neeg thiab feem ntau lwm yam aniogamous kab mob, ib tug zygote yog tsim thaum lub qe cell yog fertilized los ntawm ib tug phev cell. Hauv cov kab mob ib leeg, lub zygote tuaj yeem faib cov asexually los ntawm mitosis los tsim cov xeeb ntxwv zoo tib yam.
theem twg tshwm sim 6 hnub tom qab fertilization?
Kev cog qoob loo. Thaum lub embryo nce mus txog the blastocyst theem, kwv yees li tsib mus rau rau hnub tom qab fertilization, nws hatches tawm ntawm nws cov zona pellucida thiab pib txheej txheem ntawm implantation nyob rau hauv lub tsev menyuam.
Qhov twg los thawj zygote lossis ovum?
Ib embryo yog hu ua fetus pib thaum lub lim tiam 11 ntawm cev xeeb tub, uas yog lub lim tiam thib 9 ntawm kev loj hlob tom qab fertilization ntawm qe. A zygote yog ib hom kab mob uas tshwm sim los ntawm lub qe fertilized. Lub zygote faib ua ib lub pob ntawm cov hlwb uas nws thiaj li cog rau hauv phab ntsa ntawm lub tsev menyuam.
