Cloning: qhov zoo thiab qhov tsis zoo. Kev sib cav tawm tsam tib neeg cloning

Cov txheej txheem:

Cloning: qhov zoo thiab qhov tsis zoo. Kev sib cav tawm tsam tib neeg cloning
Cloning: qhov zoo thiab qhov tsis zoo. Kev sib cav tawm tsam tib neeg cloning

Video: Cloning: qhov zoo thiab qhov tsis zoo. Kev sib cav tawm tsam tib neeg cloning

Video: Cloning: qhov zoo thiab qhov tsis zoo. Kev sib cav tawm tsam tib neeg cloning
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Ib qho teeb meem tsis sib haum xeeb hauv cov tshuaj tau ntau xyoo tau cloning: rau thiab tawm tsam cov txheej txheem no, muaj ntau ntau. Thawj qhov hais txog clones hnub rov qab rau xyoo 1963. Nws yog thaum ntawd lo lus no pib siv los ntawm ib tug kws tshuaj caj ces los ntawm UK.

Yuav tsum muaj cov ntsiab lus

Cloning pros thiab cons
Cloning pros thiab cons

Biologists siv ntau lub ntsiab lus rau lo lus "clone". Feem ntau, lo lus no yog hais txog qee yam kabmob uas tshwm sim los ntawm kev yug me nyuam asexual thiab khaws cov ntaub ntawv keeb kwm los ntawm nws cov poj koob yawm txwv. Cov txheej txheem cloning reproduces gene qauv. Txawm li cas los xij, nws tsis tuaj yeem hais tias cov no yog cov ntawv luam tawm. Lawv genotype yog tib yam. Tab sis clones tuaj yeem sib txawv hauv lawv cov khoom supragenetic. Tej zaum lawv yuav muaj ntau qhov ntau thiab tsawg, xim, raug kab mob.

Piv txwv li, cov yaj uas paub zoo Dolly tsis yog ib daim ntawv luam ntawm cov yaj uas nws cov hlwb tau siv los muab nws. Nws muaj ntau pathologies, vim hais tias nws tuag thaum ntxov. Thiab niam txiv yaj tsis muaj kab mob. Tom qab yug me nyuamDolly, ntau tus pib tham txog qhov muaj peev xwm ntawm extrasexual human reproduction. Ob peb ntawm cov neeg txhawb nqa ntawm no ceg ntawm biology raug tso tseg los ntawm qhov tseeb hais tias txog 85% ntawm kev sim ua kom clones kawg hauv kev ua tsis tiav. Tab sis qhov tsis tau tshawb nrhiav ntawm thaj chaw no yog nyob deb ntawm qhov kev sib cav nkaus xwb tawm tsam cloning.

Muaj Peev Xwm Muaj Peev Xwm

Tam sim no, nws tseem ntxov dhau los tham txog kev tsim cov ntawv luam ntawm tib neeg. Tab sis tom qab tag nrho, tsis tsuas yog qhov no yuav tsum tau cloning: rau thiab tawm tsam txuas ntxiv ntawm kev tshawb fawb hauv cheeb tsam no, muaj ntau qhov kev sib cav tam sim no tuaj yeem pom. Tab sis tsis txhob hnov qab tias qhov kev lag luam no muab ntau lub cib fim.

Yog li, ib qho ntawm cov chaw cog lus yog kev hloov pauv. Rau kev hloov pauv hauv nruab nrog cev, koj tsis tas yuav nrhiav tus neeg pub dawb, tshawb xyuas kev sib raug zoo, tos rau kev ua haujlwm thiab thov Vajtswv tias cov txheej txheem ntawm kev tsis lees paub tsis pib. Cloning yuav ua rau nws muaj peev xwm loj hlob ib lub cev zoo tib yam nkaus thiab hloov nws.

Tseem, muaj coob leej hais tias qhov no yog lub caij nyoog rau cov tsev neeg tsis muaj menyuam uas tsis xav yuav menyuam. Tsis tas li ntawd, cloning yuav zam tau ntau yam kab mob uas tshwm sim. Ntau tus xav siv cov thev naus laus zis no kom tsis txhob muaj hnub nyoog laus thiab kev tuag.

Nws nyuaj hais tias yav tom ntej yuav muaj dab tsi rau cloning. Muaj kev sib cav muaj zog rau thiab tawm tsam ntawm ob tog. Tab sis adherents thiab tw ntawm xws li ib tug reproduction ntawm ib tug neeg hais ntawm txawv sab ntawm lub npib.

Nws ntseeg tias muaj ib hnub cov kws tshawb fawb yuav tuaj yeem tsim cov neurons uas tuaj yeem hloov cov paj hlwb hauv lub hlwb uas tuag vim qhov kev loj hlob ntawm tus kab mob Parkinson. kuj nyob rau hauvnpaj tsim cov hlwb pancreatic uas tuaj yeem tsim cov tshuaj insulin hauv lub cev ntawm cov neeg mob ntshav qab zib.

Kev sim txwv tsis pub

Tib neeg cloning pros thiab cons
Tib neeg cloning pros thiab cons

Txawm hais tias cov kws tshawb fawb tseem nyob deb heev los ntawm kev tsim kom muaj kev noj qab haus huv tag nrho ntawm tus neeg, qhov no twb txwv tsis pub nyob rau theem kev cai lij choj. Piv txwv li, UN tau tsim ib qho kev tshaj tawm tshwj xeeb, uas qhia txog qhov tsis muaj peev xwm ntawm tib neeg kev sim ua tub luam xws li cloning. Tawm tsam (tsim cov neeg tsim cai lij choj, hmoov zoo rau cov kws tshawb fawb, tsuas yog kev tawm tswv yim hauv qhov xwm txheej) kev txhim kho ntawm cov thev naus laus zis no tsuas yog 84 tus tswv cuab. Tab sis cov lus tshaj tawm tau txhawb nqa hauv Tebchaws Meskas, sab hnub tuaj hauv tebchaws Arab, hauv Latin America thiab Africa.

Ntau tus tau hais tawm hauv kev pom zoo txuas ntxiv txhim kho thev naus laus zis, los ua kev sim nrog cloning. Tab sis tib lub sijhawm, kev luam cov neeg tseem tsis tau txais. Kev tsim cov thev naus laus zis los ntawm cloning tau raug txwv hauv ntau dua 30 lub teb chaws. Ntawm lawv yog Russia, ntau lub tebchaws nyob sab Europe, Nyiv, Tuam Tshoj, Israel.

Muaj tseeb, cov kws tshawb fawb txuas ntxiv mus clone embryos. Nws ntseeg tias qhov kev taw qhia no yuav tsum hloov kho tshuaj. Nyob rau hauv lawv lub tswv yim, cov kws kho mob nrog kev pab los ntawm cov niaj hnub technologies muaj lub sij hawm mus kov yeej ntau yam kab mob, xws li Alzheimer's kab mob, Parkinson's los yog ntshav qab zib. Geneticists ntseeg hais tias txhua yam kev txwv yuav tiv thaiv kev coj ncaj ncees, kev coj ncaj ncees, tab sis lawv ua rau cov neeg nyob niaj hnub no kom tuag. Txhawm rau nkag siab koj tus cwj pwm rau qhov teeb meem no, koj yuav tsum paub txhua yamkev sib cav ntawm cov militant camps. Tom qab ntawd txhua tus neeg yuav muaj peev xwm xaiv nws tus kheej thiab nkag siab tias nws cuam tshuam li cas rau cov thev naus laus zis niaj hnub no. Ntau tus tseem nyob hauv tsev kawm ntawv txheeb tawm tag nrho cov nuances thiab txiav txim siab ob tog ntawm cov khoom plig hu ua "cloning: pros thiab cons." Ib tsab ntawv ntawm lub ncauj lus no pab kom nkag siab zoo txog koj tus cwj pwm rau qhov teeb meem no.

Impending txaus ntshai

Kev sib cav tawm tsam cloning
Kev sib cav tawm tsam cloning

Hais txog qhov yuav tsum tau txwv tsis pub siv cov cuab yeej tsim tawm, tib neeg ntshai tias cov kws kho mob tsis muaj peev xwm tswj tau txhua qhov kev tshawb pom. Txawm tias qhov kev txhim kho zais cia tshaj plaws tau paub rau ntau tus neeg. Yog li, piv txwv li, tshwm sim nrog riam phom atomic. Yog li ntawd, nws tsis tuaj yeem tswj hwm kev paub txog kev tshawb fawb thiab kev tshaj tawm.

Txawm hais tias txhua yam muaj peev xwm uas tib neeg cloning qhib, qhov zoo thiab qhov tsis zoo yuav tsum tau ntsuas kom zoo. Piv txwv li, kev txhim kho ntawm cov thev naus laus zis no tuaj yeem tso cov tes ntawm cov xeev nruj thiab pab pawg neeg phem. Lawv yuav muaj peev xwm tsim cov tub rog ntawm cov neeg muaj zog lub cev, tsis hnyav los ntawm kev txawj ntse. Tsis tas li ntawd, nws yuav muaj peev xwm tsim cov clones ntawm cov thawj coj hauv ntiaj teb thiab ua rau lawv txoj cai ua rau muaj kev kub ntxhov rau kev nom kev tswv.

Tab sis hais txog qhov no, ntau tus neeg tsis nco qab tias txhawm rau kom tau txais ib tus neeg muaj hnub nyoog, piv txwv li, 40 xyoo, yuav tsum tau 40 xyoo dhau los. Tom qab tag nrho, lawv loj hlob ib yam li cov neeg zoo tib yam. Tsis tas li ntawd, koj kuj yuav tsum nrhiav cov niam txiv uas yuav pom zoo kom yug thiab yug tus menyuam cloned. Yog li, thiaj li yuav tau txais ib pab tub rog ntawm clones, nws yog qhov tsim nyog uastsawg kawg 20-25 xyoo dhau los.

Lwm qhov kev hem thawj yog tias tib neeg yuav muaj peev xwm ua tau raws li qhov xav tau ntawm tus menyuam. Piv txwv li, nyob rau hauv Tuam Tshoj los yog Muslim lub teb chaws, qhov twg yug ntawm ib tug me nyuam tub yog qhov zoo dua, muaj peev xwm ua tau ib tug loj loj imbalance.

Tsis tas li, tsis txhob hnov qab tias cov technologies no tseem tsis tau zoo tag nrho. Cov kws tshawb fawb tau kawm coj thiab tsim cov khoom siv caj ces, tab sis tsim kom muaj peev xwm luam tau nws nyuaj dhau rau lawv. Rau geneticists, qhov no tsis yog vim li cas yuav tsum tau. Nws yog tsis yooj yim sua los tsim kev lag luam no yam tsis muaj kev tshawb fawb ntxiv.

Lwm yam tsis pom zoo

Ntau tus neeg tawm tsam kev tsim cov thev naus laus zis tsuas yog vim lawv tsis nkag siab tias tib neeg cloning yog dab tsi. Cov lus sib cav rau thiab tawm tsam yog incomprehensible rau lawv. Cov neeg tawm tsam hais tias ib tug neeg yog ib qho kev tsim tshwj xeeb thiab nws tsis tuaj yeem tsim ib daim qauv ntawm nws. Hauv lawv txoj kev xav, qhov no yog qis dua lub meej mom ntawm tib neeg. Tab sis tib lub sijhawm, lawv tsis nco qab tias cov menyuam ntxaib zoo ib yam muaj cov lej zoo sib xws. Muaj txog 150 lab ntawm lawv nyob hauv ntiaj teb.

Ntau tus neeg ntxub lub tswv yim ntawm cloning. Tab sis qhov no tsis yog vim li cas los txwv kev tshawb fawb hauv kev lag luam no. Kev txiav txim siab los tsim lawv tus kheej zoo yuav tsum tau coj los ntawm tib neeg lawv tus kheej xwb. Tsis tas li ntawd, tib neeg raug tsim txom ntawm txoj cai los txhawb txoj kev ywj pheej ntawm kev xaiv. Cov kws tshaj lij xav paub tiag tiag vim li cas cloning yog qhov qias neeg ntau dua, piv txwv li, kev hloov pauv poj niam txiv neej.

Tab sis muaj lwm qhov kev sib cav tawm tsam tib neeg cloning. Yog li ntawd, kev luam cov cai yuav txo tau cov noob caj noob ces ntau haiv neeg ntawm lub ntiaj teb no. Cov me nyuam cloned yuavqaug zog, muaj ntau yam kab mob. Thiab qhov no yuav yog lub zog rau kev loj hlob ntawm kev sib kis. Tab sis rau qhov no nws yog tsim nyog hais tias cloning nyob rau hauv lub literal siab yuav tsum tau muab tso rau ib tug industrial scale. Kwv yees li 6 billion tus neeg nyob hauv ntiaj teb. Txawm hais tias 1 lab clones tshwm sim, tus lej no yuav tsis raug saib xyuas txhawm rau txhawm rau cuam tshuam tsis yog-genotypic ntau haiv neeg. Tab sis txawm tias koj luam tawm txhua tus neeg, koj tau txais 6 billion daim ntawv sib txawv.

Yuav kom nkag siab tias cloning yog dab tsi, txawm tias koj yog rau lossis tawm tsam qhov tshwm sim no, koj yuav tsum coj mus rau hauv tus account tias cov txheej txheem no tsis sib piv nrog cov noob caj noob ces. Hauv cov txheej txheem, cov noob tsis tau hloov pauv lossis hloov pauv, tab sis tsuas yog theej. Qhov no ua rau qhov tseeb tias daim ntawv luam ntawm tus neeg tshwm sim yam tsis muaj kev hloov pauv. Nws tsis tuaj yeem dhau los ua ib tug freak lossis dab. Tsuas yog kev siv cov thev naus laus zis thev naus laus zis, qhov twg DNA hloov kho, tuaj yeem ua rau cov txiaj ntsig zoo li no.

Teeb meem kev ncaj ncees

Cloning vs. essay
Cloning vs. essay

Cov neeg tawm tsam ntawm lub tswv yim ntawm tib neeg cloning hais txog tias kev tsim tawm ntawm tib neeg cov ntawv luam yog qhov tsis ncaj ncees. Lub tsev teev ntuj kuj nquag tawm tsam qhov no. Tab sis cov neeg kev ntseeg rau feem ntau yog cov neeg tawm tsam ntawm txhua yam kev ua me nyuam, suav nrog IVF. Lawv hais tias kev tsim ntawm tib neeg, qhov paub tsis meej ntawm nws qhov yug, yuav tsum raug rau Vajtswv nkaus xwb. Tsis yog tus txiv neej los cuam tshuam txog cov teeb meem no.

Tab sis cov neeg sawv cev ntawm lub Koom Txoos Orthodox ntawm Russia hais tias tib neeg lub cev, cov ntaub so ntswg, tsiaj tuaj yeem tsim dua tshiab. Tab sis lawv kuj tawm tsam kev tsim tawm tag nrho.tus neeg. Txawm li cas los xij, lawv tsis xav txog qhov teeb meem no, vim tias cov kws tshawb fawb tsis ntsuas cloning los ntawm kev tshawb fawb pom. Lawv muaj lawv tus kheej pros thiab cons. Orthodox tham txog kev ncaj ncees sab ntawm qhov teeb meem. Ua ntej tshaj plaws, lawv nug txog yuav ua li cas ib tug neeg yuav xav li cas thaum nws pom tias nws yog lwm tus neeg daim ntawv. Kev cai lij choj kuj tseem ceeb. Lub clone puas yuav tau txais txiaj ntsig ntawm tus neeg uas tau los ua tus pub? Nws puas yuav tsum taug kev mus ntxiv?

Dhau li ntawm, nws pom tseeb tias tib neeg tsis zoo li yuav tsum tau nres ntawm qhov yooj yim cloning. Lawv yuav xav muab nws nrog kev tsim kho caj ces. Ntawd yog, yog tias qhov kev lag luam no txhim kho, ntau tus neeg yuav xav ua kom zoo dua cov ntawv luam ntawm tus neeg. Piv txwv li, lawv yuav siv zog ua kom lub cev muaj zog, txhim kho lub peev xwm ntawm lub hlwb, txhawb lub cev nqaij daim tawv, thiab ua kom pom kev zoo.

Kev lees paub dav dav ntawm kev coj ncaj ncees

Hais txog cov txiaj ntsig ntawm cloning thiab kev phom sij uas hem, ob peb tus neeg xav txog qhov txheej txheem no tshwm sim li cas. Yog li, embryonic qia cell yog qhov zoo tshaj plaws rau cov kab mob loj hlob. Tom qab tag nrho, kwv yees li ntawm 14 hnub, tag nrho cov nruab nrog cev thiab cov kab ke ntawm lub cev pib tsim los ntawm lawv. Cov kws tshawb fawb ntseeg tias 3-4 hnub qub hlwb yog qhov zoo tagnrho rau kev siv thev naus laus zis.

qia pluripotent hlwb yog qhov tsim nyog tshaj plaws rau cloning. Txhua lub cev thiab cov ntaub so ntswg yog tsim los ntawm lawv, tab sis ib lub cev tsis tuaj yeem rov tsim dua. Nws yog nyob rau theem no uas geneticists feem ntau tawm tsam. Tau ntau xyoo tau muaj kev sib tham ua haujlwm, qhov kev ntsuam xyuas tau muab los ntawm kev coj ncaj ncees li cas lub cloning ntawm tib neeg yog.embryos: qhov zoo thiab qhov tsis zoo ntawm txhua qhov chaw pw hav zoov yog qhov hnyav heev. Yog li, cov neeg tawm tsam tsis txhob nkees ntawm kev nco qab tias cov embryos rho menyuam tau siv kom tau cov hlwb no.

Qhov kev hloov pauv no tau raug txiav txim siab kom tau txais cov kabmob. Lub embryo loj hlob mus txog peb lub hlis. Tom qab ntawd, nws raug tshem tawm ntawm lub tsev menyuam thiab muab tso rau hauv qhov chaw tsis muaj menyuam uas nws txoj kev ua neej yuav txhawb nqa. Raws li adherents ntawm txoj kev xav, ib lub cev loj hlob nyob rau hauv txoj kev no tsis tuaj yeem hu ua ib tug neeg los yog ib tug tag nrho-fledged clone. Lawv hu lawv tsuas yog ib pab pawg sib cuam tshuam hauv nruab nrog cev, vim tias kev nco qab ntawm kev ua neej nyob tsis ua haujlwm thaum lub sijhawm rho menyuam. Cov neeg tawm tsam ntawm cloning categorically tsis pom zoo nrog cov tswv yim no rau kev tsim cov tshuaj tua kab mob.

Kev xav ntawm noob caj noob ces

Cloning rau lossis tawm tsam kev sau ntawv
Cloning rau lossis tawm tsam kev sau ntawv

Cov kws tshaj lij koom nrog hauv cov thev naus laus zis ntawm cov hlwb loj hlob tuaj yeem lees paub tias nws tsis tuaj yeem tau txais ib daim qauv ntawm tib neeg. Tom qab tag nrho, nws tsis yog tsuas yog cov noob uas zoo li nws, tab sis kuj yog cov xwm txheej uas nws loj hlob tuaj. Thiab nws yog tsis yooj yim sua kom recreate nws. Tib neeg xav txog kev tsim cov neeg nto moo, cov neeg ncaws pob zoo tshaj plaws, cov neeg txawj ntse, tab sis lawv tsis nco qab tias tsuas yog qhov zoo ib yam li sab nraud xwb. Tsis muaj peev xwm tsim tau tib daim ntawv luam raws li tus thawj.

Dhau li ntawd, nws tseem ntxov dhau los tham txog qhov muaj peev xwm. Yog li ntawd, nws tsis muaj txiaj ntsig los sib cav txog kev coj ncaj ncees thiab tuav kev sib tham ntawm lub ncauj lus "Cloning: pros and cons" rau lub sijhawm. Tam sim no cov kws tshawb fawb tuaj yeem nqa cov ntaub so ntswg, muab tso rau hauv lub qe uas tsis muaj nws tus kheejgenetic khoom, loj hlob ib blastocyle los ntawm nws. Tab sis tom qab ntawd, nws yuav tsum tau cog rau hauv lub tsev menyuam. Thaum loj hlob Dolly cov yaj, 277 clones raug tsim, uas tsuas yog 29 tus cag hauv lub tsev menyuam, ntawm cov nyiaj no, tsuas yog ib tug yaj uas siv tau xwb.

Kev sim ntawm nas ua kom pom tseeb tias nws muaj peev xwm tau txais cov xeeb ntxwv hauv txoj kev no. Tab sis nyob rau tib lub sij hawm, ib tug tej yam zais tsis xws luag tshwm nyob rau hauv cov tsiaj. Outwardly, lawv noj qab nyob zoo kiag li. Tab sis nrog txhua tiam neeg, lawv tau los ua tsawg thiab tsis txaus siab rau cloning.

Txawm cov kws tshaj lij tsis tuaj yeem lees tias cov thev naus laus zis no muaj kev nyab xeeb. Lawv lawv tus kheej tuaj yeem qhia txhua yam lawv paub txog qhov zoo thiab kev phom sij uas cloning yog fraught nrog ("rau" lossis "tawm tsam"). Ib tsab ntawv ntawm cov ncauj lus no los ntawm lawv txhua tus yuav tuaj yeem qhia tias muaj kev phom sij ntxiv dab tsi nyob hauv tos cov neeg sim.

Cons los ntawm qhov muag ntawm cov kws tshaj lij

Cloning rau los yog tawm tsam
Cloning rau los yog tawm tsam

Ntxhais neeg nyob twj ywm rau qhov tseeb tias lawv siv embryos rau kev tshawb fawb, lawv tsis txhawj xeeb txog kev ntseeg ntawm qhov teeb meem lossis kev coj ncaj ncees thiab kev ncaj ncees. Lawv tuaj yeem sau npe rau lwm qhov kev sib cav tawm tsam cloning. Tab sis, hauv lawv txoj kev xav, lawv tsuas yog txuas nrog qhov tseeb tias qhov kev lag luam no xav tau kev tshawb fawb ntxiv.

Txog tam sim no, nws tau pom tseeb rau cov kws tshaj lij tias cloning tsis tuaj yeem hloov pauv rau kev tsim tawm ntawm cov xeeb ntxwv. Tab sis vim li cas vim li cas cov txheej txheem tau dhau los ua nyuaj nrog txhua tiam ntawm clones tseem tsis tau qhia meej. Muaj ob lub ntsiab versions. Raws li ib tug ntawm lawv, nrog txhua cloning, qhov kawg ntawm chromosome hu ua "telomere" yog "slicked off". TABSISqhov no ua rau kev luam tawm tsis tau ntxiv. Tab sis qhov kev xav no tau raug lees paub los ntawm kev sim ntawm nas. Raws li lwm version, qhov no yog vim lub fact tias kev noj qab haus huv ntawm lub clones yog deteriorating nrog txhua tiam. Tab sis nws kuj ua tsis tiav.

Kev xaiv yog

Cloning rau thiab tawm tsam kev sib cav
Cloning rau thiab tawm tsam kev sib cav

Hais txog seb puas tsim nyog tsim dua ib tus neeg lossis lwm yam tsiaj nyob tsis muaj qhov kawg. Tom qab tag nrho, yuav ib txwm muaj cov neeg tawm tsam uas tuaj yeem sib cav txog lub ntsiab lus "Cloning: qhov zoo thiab qhov tsis zoo." Ib lub rooj teev tag nrho cov txiaj ntsig zoo thiab qhov tsis zoo ntawm txoj kev no tsis zoo li yuav pab kom lawv sib haum xeeb. Txawm hais tias nws yuav muab sijhawm rau txhua tus los txiav txim siab lawv qhov kev xav.

Pom pom, pom tias txawm tias luam DNA yuav tsis ua rau kom tau txais ib tus neeg nyob zoo ib yam. Yog li, piv txwv li, tus miv cloned muaj xim txawv dua li nws niam, tus neeg pub khoom ntawm caj ces. Ntau tus xav tias qhov thev naus laus zis no yuav tso cai rau lawv "tshem tawm" cov tsiaj, qhov txaus ntshai tshaj plaws txawm tias vam tias yuav rov tsim cov neeg uas tau ncaim mus.

Yog li ntawd, tsis muaj leej twg lees paub los txiav txim siab cloning ua ib ceg ntawm cov tshuaj tua kab mob nyob rau lub sijhawm no. Tab sis nws muaj peev xwm txhim kho nws lub peev xwm hauv kev kho mob. Yog tias koj mus rau txoj kev no nkaus xwb, ces tus naj npawb ntawm cov neeg tawm tsam txo qis. Ua li no, koj tuaj yeem xav txog tag nrho cov nuances uas cuam tshuam rau cov txheej txheem hu ua cloning. Qhov zoo thiab qhov tsis zoo tuaj yeem raug sau tseg raws li hauv qab no. Cov txiaj ntsig tseem ceeb suav nrog qhib qhov muaj peev xwm rau kev kho mob ntawm ntau yamCov kab mob loj, kho cov tawv nqaij puas los ntawm kev kub hnyiab, hloov khoom nruab nrog cev. Tab sis cov neeg tawm tsam hais tias nws yuav tsum nco ntsoov txog kev coj ncaj ncees thiab kev ncaj ncees ntawm qhov teeb meem, tias cov thev naus laus zis no tau tsim los tua lub neej tsis zoo (embryos los ntawm cov qia hlwb raug coj mus).

Pom zoo: