Menene sake yiwuwar tohowarsu kira da dabbobi da kuma shuke-shuke

Sake bugun daga kwayoyin - a haifuwa na haihuwa mutane kamar kansu, tare da sa hannu na jima'i Kwayoyin na biyu abokan, don haka an dauke jima'i da tsoho. Wannan shi ne halayyar alama na duk rayuwa a duniya. Tare da wannan duka bayyananne. Yanzu bari mu ga abin da ake kira sake yiwuwar tohowarsu, da kuma hanyoyin da shi ya auku.

Abin da ake kira sake yiwuwar tohowarsu,

Kafin samar da nasu wannan ra'ayi, za mu lura cewa form na sake yiwuwar tohowarsu, shi ne na kowa a duka biyu kwayar kuma unicellular kwayoyin. Wanda da ba alama, bayyana cewa zuwa na farko ne tsire-tsire da kuma fungi, da kuma na biyu - da sauki rayayyun kwayoyin halitta (kamar amoeba). Sunan wannan hanya na haifuwa yayi magana don kansa - ba tare da hannu na gametes. Daidai haifa amoeba, ciliates takalma, da kuma sauran protozoa. Ka lura da cewa wannan rage canzawa na jiki zuwa kome. The kawai "loophole" a cikin zabin yanayi na single-celled kwayoyin - wannan shi ne kawai wani bazuwar maye gurbi.

Saboda haka, haifuwa na shuke-shuke da dabbobi da ke faruwa asexually - a haifuwa na da nasu irin, ba a hade tare da musayar tsakanin mutane biyu daga cikin kwayoyin bayanai.

The hanyoyin da sake yiwuwar tohowarsu,

Da zarar mun fitar da siffa abin da ake kira sake yiwuwar tohowarsu, ta ba superfluous zuwa ambaci, da hanyoyi, wanda akwai da yawa. Farko - wannan division. Daga wani mutum guda, kamar amoeba samar da wasu biyu - rassa. A tsakiya fara raba, da cytoplasm fara karya up shiga kashi biyu. Na biyu Hanyar - a haifuwa na spores ko spore samuwar. Yana bukatar muhawara kwayar kwayoyin kamar shuke-shuke ko fungi. Muhimmanci! Kwayan spores ba su da hannu a haifuwa a matsayin kwayoyin iya kafa daya kawai spore. A gaba hanya - dake tasowa. Sabõda haka, shi kuma ya mayar da, misali, cikin sauki coelenterates - Hydra. Alaƙa mutane kafa daga "uwa" na jiki. Af, budding da fission ne na musamman hanya na sake yiwuwar tohowarsu - vegetative. Don ƙarin a kan wannan, mun bayyana a kasa. Fragmented sake yiwuwar tohowarsu, Hanyar da, misali tarwada. Sai ya faru kamar wannan: jiki "uwar" ya fara raba cikin sassa. Kowace daga cikinsu ta zama na biyu jiki. Vegetative haifuwa a cikin dabbobi da kuma shuke-shuke

Special hanyar asexual haifuwa na shuke-shuke da kuma ƙananan dabbobi - vegetative. Sake bugun faruwa ta wajen vegetative gabobin, kamar Tushen, ganye ko modified harbe. Alal misali, raspberries rubanya Tushen (duba siffa), Violet - ganye, da sauransu. Af, mafi mashahuri wannan hanya na haifuwa tsakanin bukãtõci na daji shuke-shuke. A cikin sharuddan ilmin halitta, da aiwatar da haifuwa na shuke-shuke saboda da sha'awar mayar da su batattu sassa. Sake bugun vegetatively iya wuce biyu ta halitta da kuma artificially, msl, ta yin amfani da ɗan adam. A cikin wannan hanya, da kuma haifuwa da yawa shuke-shuke, domin haihuwa jima'i. A dabbobi, da vegetative Hanyar ne da za'ayi rabo ko budding.

Saboda haka, quite a yawan haihuwa dabaru a kan nasu misali ya nuna mana abin da ake kira sake yiwuwar tohowarsu.