SebopehoSaense ea

Convergence - ho ke ke ha ho le thata

Bakeng sa ba ba sa tsebeng hore na e convergence ea baeloji, e lokela ho hlakisoa hore kgopolo ya go ho tluoa tabeng ea ho re ho tloha Latin le ho bolela "convergence." Re lokela ho hlokomela hore tlhaloso ena e sebediswa eseng feela ka baeloji, empa hape le ka e dipuo, puisano, 'me esita le litabeng tsa saense tsa lipolotiki. Ke ka lebaka leo re lokela ho utloisisa hore ho convergence - ke pontšo ea ho tšoana ho itseng ho tse phelang tse dissimilar linthong tsa tlhaho, tseo ho ile ha hlaha ka moelelo oa ho iphetola hoa lintho. Ka lebaka la mokhoa ona, ba ile ba ba le palo e itseng ea litšobotsi tse tšoanang (mohlala, ponahalo, sebopeho 'mele).

Batho ba bangata ba tseba hore tsela ea convergence hlaha, ho etsa mohlala, streamlined shaka, li-dolphin, e fofang lera la marsupials bokotokwe le bokotokwe fofang. Ha re bua ka mofuta o ho iphetola ha lintho ea lihlopha tsa lintho tse phelang, e abetswe convergence le fapoha, hammoho le parallelism.

The irreversibility ea ho iphetola ha lintho

Ka ho iphetola ha lintho ba e mong le e phelang e fetisitswe mekhahlelo itseng ka ntshetsopeleng bona, 'me ena e sebetsa ho ho feletseng dikarolo tsohle mehaho. 'Me haeba convergence - ke "ho tšoana", o lokela ho ela hloko ho tebisa le likhopolo tse ling.

1. fapoha ha - tseo ho se tšoane le litšobotsi tse e teng ka har'a mefuta e itseng. Tsamaiso ena e tsa likokoana-hloko ea isang ho ho hlaha ha lihlopha tse ncha le batho ka bomong. The fapoha e eketsehileng phatlalatsoe, e khōlō phapang fetoha mofuta o itseng, ka lebaka la hore 'mele oa qala ho fapana, eseng feela ka ponahalo ea hae empa hape le sebopeho hare, ka tikoloho le lintho tse khethollang sebaka ya kgetho bakeng sa ba teng. Le sebakeng se le seng ka feela khetha ba neng ba ka pholoha ka tikoloho. Ka lebaka la 'nete ea hore senotlolo khopolo ea ho iphetola ha lintho ke khetha tlhaho, feela liphoofolo tse matla hore pholoha mefuta le se fokolang haholo - e-shoa.

2. Convergence - ke hore, ka holim'a tsohle, e le lipono tse makatsang bo fapaneng fapoha. Tabeng ena, tse phelang tse sa tšoaneng qala ho fumana liforomo tse tšoanang. Hangata e ena ke e loketseng ho tikoloho e tšoanang, maemo a lona motheo le lintho tse khethollang. Re lokela ho hlokomela hore lipono tse makatsang tsa convergence ke atileng ka ho fetisisa le lefatseng la liphoofolo, moo, ho etsa mohlala, linonyana ke ke ra phela ntle le mapheo, tlhapi e lokela ho ba sebopeho streamlined joalo joalo.

3. Parallelism - fetoletsoe ho tloha puo ea Segerike, khopolo ena e bolela "Mohato o latelang". Taba ena ka taba e potolohileng ea ho iphetola ha lintho tsa lihlopha tse tšoanang tse liphatsa tsa lefutso le haufi, empa bokella ho tšoana har'a baemedi tsena u se ke ua itšetleha ka e mong le e tse ling. Hoo e ka bang kamehla, libōpeho tsena li futsitseng ho balimo. Fuoa hore convergence - e ke ho tšoana le hore a butle-butle hlahella tswa itshetlehileng itseng, concurrency ikemiselitse ho toba ke tshebetso tsa histori (ka ho khetheha, re bua ka phylogeny le).

Ke hobane'ng ha ho na le convergence ketsahalo

Ha le tšohla dikgopolo tsa motheo ka moelelo oa ho iphetola ha lintho e se e ile a re convergence - le lipono tse makatsang khafetsa, e leng ntho ea tlhaho ho baemeli ba ka sehloohong oa lefatše le phoofolo. Ha ho pelaelo hore ho fapoha le parallelism e atisa ho fumanoa ka tlhaho. Empa ho hlokahala hore convergence ke ke a latola, hobane lisosa tsa ho tšoana ho joalo ha ba laolwang ke ho ba teng ha kamano le sete e itseng ea matšoao a hore o ne a ntshetswa pele ka ho iphetola ha lintho, ho e 'ngoe kapa mofuta o mong oa lintho tse phelang ho pholoha' me e be matla le ho feta.

Kahoo, lebaka le ka sehloohong ke convergence ba tšoana ka ho toba ea niches tlholeho ba lule ho tseo kapa ho baemeli ba tse ling tsa lefatše le phoofolo. Ha o sheba mehlala e ratoang ka ho fetisisa ea ho tšoana ho convergent, re ka utloisisa hore na ke hobane'ng mefuta e itseng ea baemeli ba lintho tse phelang na sebopeho leha e le efe ho khetheha, ponahalo, 'me tse ling lintlha phela ka eona.

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