Heterogamy - uhlobo lwe ukuzala, apho iiseli kwahluka enye kwenye imilo kunye nesakhiwo

Ngokutsho Collegiate Dictionary, heterogamy - inkqubo ngokwesondo, apho inkunzi gametes njengebhinqa ukuxuba ngexesha kwezichumiso, azilingani ubukhulu kunye nokumila.

Eyona eziphambili ze yenkqubo ngokwesondo

Isogamy, heterogamy, oogamy - zonke iinkqubo weseli fusion ngokwesondo. Isogamy lolona hlobo abangekaphuhli yokuzala ngokwesondo, apho inkunzi iiseli nemazi kumlinganiselo ofanayo yaye morphologically twatse. Loo naziphi sizalwa kwi fungi elula ravnozhgutikovym kwakunye nezityalo eluhlaza.

Heterogamy - inkqubo ngokwesondo apho hlangana ezahlukeneyo ngokupheleleyo ubukhulu kunye morphological isakhiwo iiseli ngesondo (gametes).

Oogamy - ophezu ngokomyalelo inkqubo iseli Fusion ngokwesondo, apho iiseli intsholongwane zahluke kakhulu enye kwenye. Olu hlobo nkqubo ngokwesini sizalwa ebantwini, yaye ezinye ezincancisayo. Olu hlobo ifakwe kwenzeka phakathi ubungakanani yeseli ngesondo enkulu ababhinqileyo nezincinci, xa kuthelekiswa nawo, umntu. Amaninzi, iseli imazi Iqinisekile, xa amadoda ngenkuthalo ezihambayo. Le nkqubo zingenzeka ngaphakathi emzimbeni ababhinqileyo, nangaphaya.

Paul eziphilayo

Kukholelwa ukuba kukho nabafazi ezimbini: inkunzi nemazi. Kufuneka kuqatshelwe, njengoko sele siyazi ukuba indalo kukho iintlobo ezintathu yokuzala ngokwesondo: isogamy, heterogamy, oogamy. Kuzo zonke iimeko, kwasekwa okuzala, kodwa kuphela xa oogamy kwakhiwa iqanda amadlozi.

Types of yokufumanisa sex

Kukho iindidi eziliqela izigqibo besini wenzala. Eyona ezininzi eziqhele ukusetyenziswa iindlela ezintathu eziphambili: software, singamny, metagamny. Inembe kubo inkcazelo neenkqubo besini wenzala. Ezi zifundo kufuneka wenziwe ukuba inkqubo ifakwe (ontogeny). Umzekelo, ukuba uthatha isifundo lenkqubo rotifers ngesondo, ngoko ke isakhono, apho iiseli iqanda akhiwa ngokobungakanani ezahlukeneyo. Izazinzulu ziye zafumanisa ukuba amaqanda yobukhulu enkulu ukuphuhlisa nemazi, kunye nabancinane - eyindoda kuphela.

Sexing ngqo ngethuba kwezichumiso ngokwesini singamnym. Uhlalutyo lwenziwa ngokusekelwe bodwa zofuzo ngesondo. Olu hlobo yeyona ixhaphakileyo. Heterogamy - yinkqubo ephambili ngesondo ukuze kugqitywe inzala uhlobo singamnogo elizayo.

Metagamny okanye ukuzimisela sex uhlobo epigamny komntu akuxhomekekanga ekuzithandeleni ukuma iiseli lwegciwane okanye ubungakanani bazo, okanye kwi inani zofuzo. Ukuchaza ukuba olu hlobo kophando iimeko zokusingqongileyo, kwakunye ngobunzulu yeziphumo zabo. Olu hlobo ukumiselwa ucansi luthathwe ukuguqulwa Ukwahluka.

Imizekelo iimpembelelo zangaphandle

Eyona ndlela ilula kakhulu eqhelekileyo ukulawula ngesondo wenzala elizayo kungabonwa umzekelo amaqanda ingwenya. Njengoko kwindalo, kunye nokudalwa iimeko enziweyo lobushushu, kwiqondo elithile okanye zizalwa obhinqileyo okanye oyindoda kuphela. Oku kuxhomekeke lobushushu.

Kwakhona, kukho iimeko apho besini wenzala kuxhomekeke phezu iimeko apho ukuphuhlisa. Bonellia viridis - uhlobo lwe annelid umbungu zaselwandle, nto leyo eye Isiphiwo esikhethekileyo kakhulu ukutshintsha ngesondo kuxhomekeka yokuhlala.

Angafaniyo izinga ngempembelelo ezithile

I sex umzimba kuchaphazela phantse ngokulinganayo zombini kweejini kunye eziliqela zangaphandle. Nangona kunjalo, izinga ngempembelelo eziphilayo ezahlukeneyo emgangathweni yeemeko zangaphandle kunye kweejini ezahlukeneyo. Isigqibo ngekamva inzala ngesondo ebantwini kwaye uninzi ezincancisayo nguye kweejini. Kuba olu hlobo nkqubo ngokwesondo heterogamy, imizekelo apho iye yachazwa ngaphambili kwindawo yokuqala bantu. iimeko zangaphandle le kwinkqubo zingakuchaphazeli. Ngelixa efanayo Bonellia viridis (iintlobo nereid) ochazwe ngaphambili, okanye iintlanzi baxhomekeke ngokupheleleyo utshintsho kokusingqongileyo lwangaphandle.

Imazi yezi iintshulube mkhulu kakhulu kwimali besilisa ukuba ubukhulu ngemikroskopu. Uhlala ekunene kwi phecana zangasese. Imibungu nazo ulala, oko kukuthi, abe neempawu amadoda namabhinqa. Kungenxa yoko le nto sex yenzala lichatshazelwe nangakumbi ngeemeko zokusingqongileyo. Ngoko ke, Umbungu, ngesisa zihlala kwikholam amanzi aya kuba ubukhulu enkulu female ngokupheleleyo-enobugcisa. Noko ke, ukuba adibana libhinqa, nto leyo msulwa oyindoda, oko ezingenakususwa ezikuwo, yaye ekugqibeleni ibe eyindoda.

ngaphandle

Kuyenzeka ukuba besini yenzala kwezinye ezincancisayo abachatshazelwa iimeko zangaphandle. Iinkomo, namawele afanayo le zibangelwa kukuziphatha heterogamy. Nkqu kwimeko apho imazi ngexesha elifanayo ukuphuhlisa amawele nesawo, inkunzi yenkomo xa ngokuqhelekileyo ibhekiswa phambili kuyo, lo gama amantshontsho angavela zombini neempawu zesini inkunzi nemazi. Olu phawu olubangelwa kukuba hormone sex inkunzi uyakhululwa phambi kowesi- ngaloo anganefuthe ngesondo kwamawele zabo. Lo mzekelo ubonisa ngokucacileyo impembelelo iimeko zangaphandle kwi besini elizayo nenzala.

Ngelithini oku kulandela ukuba isiseko kunye isiseko ngokobugcisa naluphi na utshintsho, kubandakanywa isini, i buvamise yokuqala ikhowudi yezofuzo ye ephilayo. Olu phawu kubonisa into yokuba umgangatho zingatshintsha njengokuba kwangoko ngenxa yophuhliso eziphilayo. Kwaye heterogamy - le yenye bungqina ibalulekileyo yale ngoluvo.