Puas yuav kawg thiab cov ntawv pov thawj tas sijhawm?

Cov txheej txheem:

Puas yuav kawg thiab cov ntawv pov thawj tas sijhawm?
Puas yuav kawg thiab cov ntawv pov thawj tas sijhawm?
Anonim

Yuav Tsis Muaj Hnub Nyoog Tsis muaj hnub tas sij hawm ntawm kev xav. Yog tias qhov kev xav tau raug ua tiav 40 xyoo dhau los, nws tseem siv tau.

Lub siab kawg thiab zaj lus tim khawv ntev npaum li cas?

A yuav nyob mus ib txhis tshwj tsis yog tus neeg xeem ntawv tshem nws lossis lwm yam xwm txheejntsib. Tam sim ntawd tom qab ib tug neeg tsim nws, cov lus yuav siv tau, yog tias koj tuag rau hnub tom qab, koj tus kheej tus neeg sawv cev xyuas kom meej tias koj xav tau.

Dab tsi ua rau lub siab kawg thiab cov lus tim khawv tsis raug?

A yuav yog tsis raug yog tias nws tsis raug pom zoo. Feem ntau, ob tug neeg tim khawv yuav tsum tau kos npe rau lub siab nyiam nyob rau hauv tus neeg soj ntsuam lub xub ntiag tom qab saib tus neeg soj ntsuam kos npe rau lub siab nyiam. Cov neeg tim khawv yuav tsum yog ib lub hnub nyoog, thiab feem ntau yuav tsum tsis txhob sawv los ua qub txeeg qub teg ntawm lub siab nyiam. (Lawv yuav tsum yog cov pov thawj tsis txaus siab).

Puas lub siab kawg thiab zaj lus tim khawv puas tas mus?

Yog tias qhov kev txiav txim siab zaum kawg thiab daim ntawv pov thawj raug tshem tawm, thiab tsis tsim ib qho tshiab, nws zoo li yog tias koj tuag hauv plab (tsis muaj lub siab nyiam), thiab cov kev cai ntawm koj lub xeev tau ua raws li kev faib koj cov cuab tam. Puas yog daim ntawv cog lus kawg thiab daim ntawv pov thawj tas sijhawm? Tsis yog, lub siab kawg thiab zaj lus tim khawv yeej tsis tas sijhawm.

Puas yuav ua tau 20 xyoo dhau los tseem siv tau?

Tsis muaj sij hawm txwv ntawm lub siab nyiam uas txhais tau tias koj yuav tsum tau sau ib qho tshiab txhua xyoo, ob xyoos, 10 xyoo… … Txawm hais tias raws li tau hais los saum no, yog koj yuav dhau los tawm hnubvim muaj xwm txheej, koj yuav tsum hloov kho yam tsawg kawg, yog tias tsis sau dua, nws.

Pom zoo:

Nthuav cov khoom
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Johnson Tsang thawj zaug kawm ua qauv av nplaum hauv xyoo 1991, thaum nws ua haujlwm kaum peb xyoos ua tub ceev xwm. Tam sim no 58 xyoo, Tsang yog tus tus tsim cov duab puab ntawm lub ntsej muaguas tau ncab thiab qhib rau hauv txoj kev surreal thiab uas thawb ciam teb ntawm kev muaj tiag.

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Meiosis tshwm sim hauv cov kab mob primordial, cov hlwb tau teev tseg rau kev sib deev thiab cais tawm ntawm lub cev lub cev somatic. Nyob rau hauv kev npaj rau meiosis, ib tug kab mob cell mus los ntawm interphase, thaum lub sij hawm uas tag nrho cov cell (xws li cov noob caj noob ces muaj nyob rau hauv lub nucleus) undergoes replication.