Samuwar, Kolejoji da jami'o'i da
Shin da shi ko da yaushe rudimentary - shi ne ba dole ba?
A cikin wallafe-wallafen amfani da rudimentary - shi ya zo daga baya, tashi daga wani abu wulakantacce. The kalmar "alãma" a ba nazarin halittu mahallin yana nufin wani relic na wani sabon abu da ya dade tun bace.
Da kalmar a cikin kimiyya wallafe-wallafen
Rudimentary - shi ne wani yankin da cewa a cikin ilmin halitta da kuma magani da ake amfani da su bayyana a jiki sashi ko Gabar da ya rasa ta asali ma'anar. The aiki da ya yi aikin da wannan jiki, a yanzu mataki na tarihi ci gaba da jinsunan ba muhimmanci da kuma ya ke kusa da nau'i nau'i.
The kama shi ne cewa ce domin tabbatar, rudimentary a jiki ko ba, zai iya zama rare. Bayan duk, da ilimin halittar jiki na jiki, ko da idan an kawai gina, kuma yana da kananan size, ba ya nufin shi ne m, ko rudimentary.
Wasu fasaloli na amfani da kalmar
A Faransa kimiyya kafofin, wannan siffa da aka samu a cikin ma'anar "kunno kai," da cewa shi ne rudimentary, amma da begen na ci gaba, maimakon nau'i nau'i. A nuna, irin wannan ma'ana canjawa wuri zuwa ga hukumomin, sakamakon da phylogeny (cikin Turanci da kuma American kafofin), ya kuma inganta akwai rudimentary - An kunno kai, kamar yadda tsayayya ga al'ada ma'anar ra'ayi.
A rudiments na wani mutum
Wasu ilimi hukumomi da kuma a cikin juyin ci gaba da jinsunan rasa su aiki, ya zama dole ba su canza yanayin rayuwar.
Amma ba za mu iya ce cewa gabobi marasa aiki zama m, suna nan da nan ya canja su aiki. Misalai suna ba a tebur.
rudiment | Tsohon aiki | m fasalin |
coccyx | daidaituwa na ƙungiyoyi | Kullawa da tsokoki da jijiyoyin, daidai kaya rarraba kan pelvic abin ɗamara |
Shafi (appendix) | A narkewa daga fiber daga unprocessed abinci | Sanya symbiotic kwayoyin kiwo, samar da hormones, bitamin K |
Jikin gashi cover | jiki zafi, fata kariya | Saka hannu cikin thermoregulation, kyallen rash cikas a wuraren da sunadarin gumi (armpits, inguinal folds) |
"Hikima hakora" | Nika m unprocessed abinci | Canzawa manyan molars a harka na hasara |
epiphysis | Saura dauki tsarin na gani fili | A mafi muhimmanci kullum jiki, shafi aikin gland |
A daya hannun, kunne ko ninka epicanthus tsokoki ba yi da muhimmanci ayyuka suna a yanzu a cikin jikin mutum.
Rudiments da atavism
Duka wadannan matsalolin da ake samu a matsayin shaida na juyin halitta. Su sukan gauraye, saboda shi ne, a gaskiya, da daban-daban fuskoki dabam-dabam na wannan sabon abu. Rudiments, kamar yadda aka ambata a sama, suna tasowa ko yanzu suke tasowa, amma suna ga kowa da kowa mutane na wani nau'in. Atavisms guda ne m, kuma suna rudiment, ci gaba a cikin cikakken (wutsiya, jiki gashi a kan wani mutum ta fuskar).
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