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Umbono Wokuziphendukela Kwemvelo Wangaphambi KukaDarwin Ngaphambi kokuba uCharles Darwin ethule umbono wakhe wokuziphendukela kwemvelo ngokukhethwa kwemvelo ngo-1859, umqondo wokushintsha kwezinto eziphilayo wawusuyindaba yempikiswano nokuqagela isikhathi eside emhlabeni wesayensi. Ukucabanga ngokuthi izinto eziphilayo zingashintsha kanjani kwakuyingxenye yesifiso eside sesintu sokuqonda ukuhlukahluka kokuphila eMhlabeni. Lesi sihloko sizohlola okuhlukahlukene… Funda kabanzi

Ukuthuthukiswa Kwenkolelo-mbono Yokuziphendukela Kwemvelo Inkolelo-mbono yokuziphendukela kwemvelo ingenye yezinkolelo-mbono zesayensi ezibaluleke kakhulu nezinethonya emlandweni wesayensi. Selokhu yethulwa nguCharles Darwin ngekhulu le-19, le nkolelo-mbono iye yathuthukiswa futhi yathuthukiswa ngezifundo ezahlukahlukene kanye nokutholwa okusha. Lesi sihloko sizoxoxa ngokuthuthukiswa kwenkolelo-mbono yokuziphendukela kwemvelo, kusukela emqondweni wayo wokuqala kuya... Funda kabanzi

Incazelo Yokuziphendukela Kwemvelo: Ukulandelela Imvelaphi Yayo Nokuthuthukiswa Kwayo Ukuziphendukela Kwemvelo kuwumqondo oyisisekelo ku-biology ochaza ukuthi izinto eziphilayo eMhlabeni zishintsha kanjani ngokuhamba kwesikhathi. UCharles Darwin wayengusosayensi owaqala ukwethula lo mbono ngokuphelele encwadini yakhe edumile, ethi "On the Origin of Species," ngo-1859. Kodwa-ke, umqondo wokushintsha kwezinhlobo awusiwo… Funda kabanzi

Ukuguqulwa kwezakhi zofuzo kanye nezifo ezizuzwa njengefa Ukuguqulwa kwezakhi zofuzo kuyizinguquko ezihlala njalo ochungechungeni lwe-DNA olwenza izakhi zofuzo zethu. Izakhi zofuzo ziyizingxenye eziyisisekelo zofuzo ezinquma izici eziningi zomzimba nezomzimba wezinto eziphilayo. Ukuguqulwa kwezakhi zofuzo kungenzeka ngokuzenzekelayo ngesikhathi sokuphindaphinda kwe-DNA noma kungabangelwa yizici zemvelo ezifana nemisebe namakhemikhali. Nakuba izinguquko eziningi zingathathi hlangothi noma ngisho... Funda kabanzi

Ukunquma Ubulili Ukunquma ubulili kuyisihloko esigxile kakhulu emikhakheni eyahlukene yesayensi, njengebhayoloji, ezokwelapha, ngisho nezenhlalo. Ukuqonda ukuthi ubulili bunqunywa kanjani akubalulekile nje kuphela kwisayensi uqobo kodwa futhi kunemiphumela empilweni, amalungelo abantu, kanye nenqubomgomo yezenhlalo. Lesi sihloko sizohlola izici ezahlukahlukene… Funda kabanzi

Ukuhambisana: Ukuqonda Ubudlelwano kanye Nomphumela Wabo Empilweni Yansuku Zonke Empilweni yansuku zonke, sivame ukuzwa igama elithi "ukuhambisana" ezimweni ezahlukene, kusukela emfundweni kuya kwezomnotho kuya kwengqondo. Naphezu kokusetshenziswa kwalo njalo, incazelo kanye nomthelela walo ngezinye izikhathi akuqondakali kahle. Lesi sihloko sizohlola ngokugcwele umqondo "wokuhambisana," ukuthi ungasetshenziswa kanjani ezicini ezahlukene... Funda kabanzi

I-Epistasis kanye ne-Hypostasis: Ukuqonda Ukusebenzisana Kwezakhi Zofuzo Ngokujulile Ezweni lezakhi zofuzo, amagama athi "epistasis" kanye nelithi "hypostasis" angase azwakale engajwayelekile kubantu abaningi. Kodwa-ke, le mibono ibalulekile ngoba isisiza siqonde ukuthi izakhi zofuzo zixhumana kanjani ukuze kulawulwe uhlobo lwento ephilayo. Lesi sihloko sizochaza yomibili le mibono ngokujulile, sixoxe ngokufaneleka kwayo kuzakhi zofuzo zanamuhla, kanye… Funda kabanzi

Ama-polymer: Izinto Zesikhathi Esizayo Ama-polymer aphakathi kwezinto eziguquguqukayo kakhulu nezinguquko kakhulu kwisayensi yezinto. Kusukela kumapulasitiki esiwasebenzisa nsuku zonke kuya kumafayibha akha izindwangu zethu, ama-polymer adlala indima ebalulekile empilweni yanamuhla. Lesi sihloko sizoxoxa ngokuthi ayini ama-polymer, izakhiwo zawo ezihlukile, izinhlobo zawo, kanye nokusetshenziswa kwawo okubanzi emikhakheni eyahlukene yezimboni. Yini … Funda kabanzi

I-Cryptomercy: Ukufihla Idatha Esikhathini Sedijithali Esikhathini sedijithali esishintsha njalo, ukuphepha kolwazi sekuyinto ebalulekile okufanele icatshangelwe. Umqondo owodwa obalulekile ekugcineni imfihlo nobuqotho bedatha yi-cryptomercy. Leli gama lingase lingaziwa njenge-cryptography, kodwa lidlala indima ebaluleke ngokulinganayo ezweni lezokuphepha kwe-cyber. Lesi sihloko… Funda kabanzi

I-Atavism: Ukuthola Imikhondo Yesikhathi Esidlule Esizuzwe Njengefa Isingeniso Ku-biology kanye nokuziphendukela kwemvelo, kunomqondo othakazelisayo owaziwa ngokuthi i-atavism. I-Atavism ibhekisela ekuveleni kabusha kwezimpawu zokhokho ezazilahlekile ezizukulwaneni ezidlule. Lesi simo siphakamisa umbuzo othakazelisayo wokuthi imikhondo yesikhathi esidlule ingavela kanjani ngokuzumayo ezintweni eziphilayo zanamuhla. Kulesi sihloko, sizo… Funda kabanzi