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Vim li cas hiav txwv urchins tseem ceeb rau thaj chaw embryology?

Cov txheej txheem:

Vim li cas hiav txwv urchins tseem ceeb rau thaj chaw embryology?
Vim li cas hiav txwv urchins tseem ceeb rau thaj chaw embryology?

Video: Vim li cas hiav txwv urchins tseem ceeb rau thaj chaw embryology?

Video: Vim li cas hiav txwv urchins tseem ceeb rau thaj chaw embryology?
Video: Tswv Yexus lub neej thaum pib txug thaum xaus 2024, Lub Xya hli ntuj
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Keeb kwm, hiav txwv urchins yog tus qauv tseem ceeb hauv kev qhia txog ntau yam ntawm cov teeb meem kev loj hlob zoo, suav nrog cov txheej txheem ntawm kev ua kom muaj menyuam thiab qe ua kom muaj zog, cleavage, gastrulation, thiab kev tswj ntawm sib txawv nyob rau hauv thaum ntxov embryo.

Vim li cas hiav txwv urchins tseem ceeb?

Hiav txwv urchins yog tseem ceeb herbivores ntawm coral reefs, thiab hauv qee qhov chaw ecosystems lawv ua lub luag haujlwm tseem ceeb hauv kev tswj hwm qhov sib npaug ntawm coral thiab algae. Lawv lub luag haujlwm tuaj yeem yog qhov tseem ceeb tshwj xeeb ntawm cov pob zeb reefs qhov twg lwm cov tsiaj txhu (xws li parrotfishes thiab rabbitfishes) tau depleted.

Vim li cas hiav txwv urchin siv los ua qauv kab mob hauv kev loj hlob biology?

Cov tsiaj raug xaiv los ua qauv khoom rau ntau lub hom phiaj: hiav txwv urchins yog qhov yooj yim rau kev nthuav tawm hauv chav kuaj; Nws yog ib qho yooj yim kom tau synchronous embryo kab lis kev cai thiab induce embryogenesis sai; Lub embryo yog pob tshab thiab muaj cov qauv yooj yim.

Vim li cas cov kws tshawb fawb tau xaiv lub hiav txwv urchin embryos los kawm txog kev faib cell?

Tsis ntev los no, cov kws tshawb fawb tau siv hiav txwv urchin embryos ua tus qauv rau kev nthuav qhia lub luag haujlwm ntawm cov cellular thiab molecular mechanisms koom nrog tib neeg kev noj qab haus huv thiab kab mob. … Qhov no ua tau vim yog muaj lub paj hlwb uas tshwm sim thaum lub plab zom mov hauv ectoderm ntawm lub embryo [20].

Vim li cas hiav txwv urchins tseem ceeb rau thaj chaw embryology?

Hiav txwv urchins tau siv ntau xyoo los ntawm cov kws tshawb fawb los kawm txog kev txhim kho cov txheej txheem xws li fertilization. Vim lawv muaj ntau lub qe loj heev, lawv yog cov tsiaj zoo rau kev kawm. Thaum secreted, cov qe ntawm S. … Tom qab ntawd, cov txheej txheem kev loj hlob xws li qe thiab embryo txoj kev loj hlob tuaj yeem kawm.

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