Yintoni yavelisa amagqabi: ngumongo inkqubo, intsingiselo kunye nemizekelo

Kwindalo, kukho iindlela eziliqela lokwanda eziphilayo, eqinisekisa ukuba ukuqhubeka kwizizukulwana kwaye ubukho ukuphila emhlabeni. Ngamnye kubo ibangwa iimpawu zezakhiwo, indawo yokuhlala kunye yokuhlela. Kweli nqaku siza kuxubusha ngakumbi oko lolu kunye eziphilayo apho le ndlela andise Uphawu.

eziphilayo Indlela zokuzalela

Kukho iindlela ezimbini eziphambili yokuzala. Sex lwenziwa iiseli ezikhethekileyo - gametes. Kulo mzekelo inxibelelanisa izinto chromosomal ezimbini eziphilileyo okanye zofuzo recombination kwenzeka. Ngenxa yoko, a omzimba omtsha uzuza iimpawu ezintsha. Xa gametes yokuzala maqanda musa inxaxheba. Kuyinto uphawu abameli zonke izikumkani uhlobo, ngaphandle iintsholongwane ande ngendlela ekhethekileyo - yeyokuzingca ibandla.

ukuzala maqanda: amagqabi, hayi kuphela

Olu hlobo yokuzala nayo efanayo ngeendlela ezininzi. Ngokomzekelo, ezinye izityalo kunye iseli fungi uhlobo yokuzala maqanda, ezo zibizwa ngokuba sikuyo. Kuba ulwelwe, uqulethe ezihambayo, ekubeni babe misila. Ewe kuthiwa zoospores. Xa izityalo eziphezulu, ukuzala maqanda kwenzeka ngokusebenzisa yokuzahlula kwenxenye multicellular - ngokukha. Kwaye yiloo nto lolu kwaye iqhutywa njani, kufuneka ingqalelo ebukumkanini ngamnye uhlobo yedwa.

Thomo kwezityalo

Yavelisa amagqabi e eziphilayo zezityalo ayikho nje eqhelekileyo. abantu ezintsha kuvele ngokukha okanye ngokwesini - xa cone okanye iintyatyambo. Yintoni na izityalo amagqabi, singakwazi siqwalasele umzekelo isityalo endlwini amayeza Beautiful. Ngomhla ngohlangothi namagqabi ayo abe Amanqatha ezincinci eziya ekugqibeleni nazo zonke iimpawu zesityalo oqolileyo. Nangona ubukhulu isinciphiso, ukuba zenza kakhulu njengoko sele kuqulatha iingcambu namasebe. Oku kuthetha ukuba izityalo abatsha bayakwazi umBoniso kwaye ngokuzimeleyo, kwaye wanyisa amanzi zeendawana. Kokufikelela ubungakanani othile, kidney enjalo emhlabeni, nto leyo kuhluma zibe izityalo abadala.

izilwanyana thomo

Yokuzala lolu lwenzeka izilwanyana. Ezizezi - i coelenterates, ummeli we yona hydra amanzi. It iqhotyoshelwe yokuphila. Ngamaxesha athile kwi Buze umzimba wakhe kwakhiwa - a hillock encinane. It ezonto yokufumana zonke imikhwa ephilayo abadala. Emva koko kukho ekupheliseni nezintso, lisuke self-eyakhayo. Thile ngenye indlela, le nkqubo lwenzeka kwezinye abameli coelenterates - kwelekorale. nezintso zabo nabo ikhula, ezifanayo abadala, kodwa akukho inkqubo cleavage. Isiphumo umzimba imilo ezingaqhelekanga. yokuzuza kwawo elwandle zenza lonke izixhobo.

Coelenterates - asingabo izilwanyana kuphela nako zizalana yi lolu. Umzekelo, ukuba ezidla tapeworm ekuthiwa eFinland, qala yakha Buze, nto leyo iguqulelwa intloko sisidleleli. Ngayo, kwandlelwe nto zibambene nayo umkhosi duct emathunjini. Inyathelo elilandelayo ukwakha web yavelisa amagqabi kunye namacandelo ezininzi helminth.

fungi yavelisa amagqabi

Yintoni amagqabi, unako kwakhona ingqalelo neenkowane umzekelo. Ngamnye wethu uye waphawula ukuba ukuba igwele ukuya neswekile ushiye kwindawo efudumeleyo, ngangenani lazo emva kwexesha ukunyuka kakhulu. Lo ngumzekelo we lokwanda nomngundo, lolu esetyenziswa ekuphekeni kunye nesoda yokubhaka. Ngethuba lale nkqubo, iseli igwele yenziwe kwi Buze encinane esigcina kwandisa ubukhulu. Ngoko kukho isahlulelo phakathi unina nentombi iseli esiza elimxinwa channel therebetween. Emva koko, iseli mfana akwazi ukuziphilela. Inkqubo yavelisa amagqabi igwele malunga neeyure ezimbini.

amagciwane yavelisa amagqabi

Ngokwesiko ke Kuthathwa ukuba iintsholongwane uphawu omnye kuphela indlela abangekaphuhli yokuzala - umsantsa phakathi kwabantu ababini. Noko ke, kukho iintlobo ezithile zezinto eziphilayo ziyakwazi lolu. Le ntsholongwane ezimfusa, ihamba kunye ngoncedo misila ezininzi. Kodwa oku Kwimeko ongasetyenziswayo kuyo lo mgaqo jikelele. Izintso nayo kwa iintsholongwane, nto leyo ke dichotomous eyayizalwa, ukwakha abantu abatsha.

Ixabiso le ndlela yokuzala maqanda kwindalo, mkhulu ngokwaneleyo. Ngexesha iiseli yavelisa amagqabi ndohlulahlule mitosis. Oku kuthetha ukuba ngenxa ukubunjwa kwabantu zemfuza ezifanayo, kwaye lidlule ulwazi yemfuza ukusuka kwisizukulwana ukuya kwisizukulwana ingaguqukanga, ukuqinisekisa ukuqhubeka izizukulwana ngabameli phantse onke amaqela eziphilayo.