Intshayelelo kwidijithi ye-vestigial kwisele

Amasele zizidalwa ezibangel’ umdla eziye zatsala ingqalelo yezazinzulu kangangamashumi eminyaka. Baziwa ngeempawu zabo ezikhethekileyo, kuquka imilenze yabo enamandla, iinyawo zabo ezinentambo, nolwimi olude. Nangona kunjalo, kukho inkalo enye ye-anatomy yesele eye yavusa umdla wabaphandi-idijithi ye-vestigial. Esi sihlomelo sincinci yintsalela yexesha elidlulileyo lenguquko yesele kwaye ibingumxholo wezifundo ezininzi ukuqonda umsebenzi kunye nokubaluleka kwayo.

I-anatomy yonyawo lwesele

Ukuze uqonde idijithi yesele kwisele, kubalulekile ukuba uqale uphonononge indalo yonyawo lwesele. Unyawo lwesele luphawulwa ngeenzwane zalo ezintlanu, ezithungelwe lula ukuqubha. Uzwane ngalunye lunothotho lwamathambo, izihlunu kunye nemisipha eyenza isele likwazi ukutsiba, ukudada nokunyuka. Unyawo lukwagqunywe ngumaleko obhityileyo wesikhumba okhupha umfinya, nto leyo enceda ukugcina isele lifumile.

Ingcaciso yedijithi engephi

Idijithi ye-vestigial sisakhiwo esiphulukene nomsebenzi waso wokuqala ngexesha le-evolution. Kwimeko yamasele, idijithi ye-vestigial yinzwane encinci yesihlanu ebekwe kufutshane neqatha. Le nzwane ayisebenzi nayiphi na injongo esebenzayo kumasele anamhlanje kwaye idla ngokubizwa ngokuba yi "spur." Ezinye iindidi zamasele zinamanani angaqhelekanga kwiinyawo zawo zangaphambili ngokunjalo.

Injongo yamanani angekhoyo

Injongo yamanani angekhoyo ngumbandela oxoxwa kakhulu kwizazinzulu. Abanye abaphandi bakholelwa ukuba ziintsalela zeempawu zookhokho ezazifudula zisebenza kodwa zaphelelwa lixesha. Abanye bacebisa ukuba banokudlala indima ekukhetheni ngokwesondo okanye basebenze njengendawo yokuhlola uphuhliso ngexesha lophuhliso lwe-embryonic.

Apho unokukhangela amadijithi angekhoyo kwisele

Ukuze ufumane idijithi ye-vestigial kwisele, umntu kufuneka ajongisise iqakala. I-spur idla ngokuba yincinci kwaye ayibonakali, okwenza kube nzima ukuyibona ngaphandle kweglasi yokukhulisa okanye i-microscope. Ubungakanani kunye nokumila kwedijithi ye-vestigial inokwahluka ngokuxhomekeke kwiindidi zesele.

Ukuthelekiswa kweentlobo zesele

Ayizizo zonke iintlobo zamasele ezinamadijithi anqabileyo, kwaye ezo zikhoyo zinokuba nazo kwiindawo ezahlukeneyo okanye ubungakanani. Umzekelo, amanye amasele aneedijithi ezingaqhelekanga ezinyaweni zawo zangaphambili, ngelixa amanye enawo kuphela ezinyaweni zawo zangasemva. Ubungakanani kunye nokumila kwedijithi ye-vestigial nako kunokwahluka kakhulu phakathi kweentlobo.

Ukuvela kwamanani angekhoyo

Ukuvela kwe-vestigial digits ngumbandela obangela umdla oye wabangela umdla kwizazinzulu kangangeminyaka emininzi. Kukholelwa ukuba ezi zakhiwo ziyintsalela yeempawu zeminyanya ezazifudula zisebenza kodwa zaphelelwa lixesha. Iingcinezelo ezikhethiweyo eziye zakhokelela ekulahlekelweni komsebenzi zisengumxholo weengxoxo ezininzi phakathi kwabaphandi.

Indlela amadijithi angenayo eyichaphazela ngayo indlela isele

Umsebenzi wamadijithi angama-vestigial kumasele awuqondwa kakuhle, kodwa abanye abaphandi bakholelwa ukuba banokudlala indima ekukhetheni ngokwesondo. Abanye bacebisa ukuba banokusebenza njengendawo yokukhangela yophuhliso ngexesha lophuhliso lwe-embryonic. Uphando oluthe kratya luyafuneka ukuze kubonwe owona msebenzi wokwenyani wamanani angekhoyo kumasele.

Ukubaluleka kwamanani angekhoyo kuphando

I-Vestigial digits ibalulekile kubaphandi kuba inokunika ingqiqo kwimbali yokuzivelela kwezinto eziphilayo. Zisenokusetyenziselwa ukufunda iindlela zebhayoloji yophuhliso kunye nesiseko sofuzo sokuziqhelanisa. Ukufunda ama-vestigial numbers kumasele kunokusinceda siqonde ngcono ukuvela kobomi eMhlabeni.

Ubudlelwane babantu ukuya kumanani angekhoyo

Abantu bakwanazo nezakheko zangaphandle, njenge-appendix namazinyo obulumko. Ezi zakhiwo bezikade zisebenza kodwa ziye zaphulukana nenjongo yazo ekuhambeni kwexesha. Ukufunda ngolwakhiwo lwezinye izilwanyana kunokusinceda siqonde ngcono ukuvela kwe-anatomy yethu.

Ikamva lophando lwedijithali

Uphononongo lwamanani angekhoyo kumasele yinkalo eqhubekayo yophando, kunemibuzo emininzi engaphendulekiyo ekusafuneka iphononongwe. Uphando lwexesha elizayo lunokujolisa ekumiseleni umsebenzi wamanani angekhoyo, ukufunda ngesiseko sofuzo sokuzivelela kwawo, kunye nokuphonononga usetyenziso olunokubakho kwi-biotechnology.

Ukuqukumbela: Ukubaluleka kwamanani angekhoyo kumasele

Ukuqukumbela, idijithi ye-vestigial kwisele sisakhiwo esincinci kodwa esibalulekileyo esinika ukuqonda kwimbali yendaleko yezi zidalwa zinomdla. Ngelixa umsebenzi wayo ungaqondwa kakuhle, uphononongo lwamadijithi angama-vestigial kumasele lunokusinceda siqonde ngcono iindlela zokuzivelela kwemvelo kunye nesiseko sofuzo sokulungelelanisa. Ngokuphonononga ubume bezinye izilwanyana, sinokufumana ukuqonda ngcono ngokwethu i-anatomy kunye nendaleko.