Txhais tau tias yog meroblastic?

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Txhais tau tias yog meroblastic?
Txhais tau tias yog meroblastic?

Video: Txhais tau tias yog meroblastic?

Video: Txhais tau tias yog meroblastic?
Video: Qhia txhais 30 zaj npau suav tias yog dab tsi part 1 14 Sep 2019 2024, Cuaj hlis
Anonim

Kev Kho Mob Txhais ntawm meroblastic: yam ntxwv los ntawm lossis ua tsis tiav cleavage vim muaj qhov cuam tshuam ntawm cov khoom yolk(xws li cov qe ntawm cov noog) - piv holoblastic.

txhais li cas los ntawm Holoblastic?

: tus yam ntxwv los ntawm kev ua tiav tiav uas faib tag nrho lub qe rau hauv qhov sib txawv thiab cais blastomeres - piv meroblastic.

Koj txhais li cas los ntawm Holoblastic thiab Meroblastic?

Holoblastic cleavage - yog ua tiav cleavage lub ntsiab lus nws nkag mus rau lub qe tag. Meroblastic cleavage - tsis tiav lossis ib nrab cleavage txhais tau tias nws tsis nkag mus rau lub qe tag. … Vim lub qe yog loj, nws nyuaj rau qhov kev sib cais.

Meroblastic cleavage yog dab tsi muab piv txwv?

Piv txwv. Cov cleavage ntawm amphibians, tsiaj nyeg, tsis-vertebrate chordates, echinoderms, feem ntau mollusks, annelids, flatworms, thiab nematodes yog cov piv txwv ntawm ib tug holoblastic cleavage thaum lub cleavage ntawm noog thiab tsiaj reptilesyog cov piv txwv ntawm meroblastic cleavage.

Meroblastic superficial yog dab tsi?

Definition. (embryology) Ib qho meroblastic cleavage qhov twg mitosis tshwm sim yam tsis muaj cytokinesis, ua rau ntau lub nuclei, uas tsiv mus rau qhov chaw ntawm lub qe centrolecithal.

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