HangangaPūtaiao

He aha te te whakatō kākano, he aha e ona āhuatanga, me te whanaketanga

I roto i te tikanga ki te mārama me pēhea te te tukanga o te kikiritanga me te whanau o te ora hou, e hiahia ana koe ki te waia koe ki nga ariā taketake. He mea tika ki te mahi ki te meka e te whakatō kākano taua. Na hoki ki te whakahoki i ētahi atu pātai e pā ana ki te āhua o te hanga e te reira, e he āhuatanga motuhake, he aha e nga wāhanga o tona whanaketanga atu e taea te ārai i te reira.

Kia tīmata a i te timatanga, me te whakahoki ki te pātai tuatahi. He aha te mea he kākano? Tenei pūtau, i hanga nei e te hanumi, o rua tohuhema i roto i te tukanga matua i huaina kikiritanga. Ko reira huru o kaiao tāne whakamahia mō te hua ia ratou. Na roto i te taata nei te hanga i te whakatō kākano, e kore e te tangata anake, me te kararehe, engari ano hoki maha tipu me te harore. Kua tomo te wā he huaota Eduard Strasburger i Germany i te mutunga o te rau tau 19.

Ite e te whakatō kākano, haamana'o te āhuatanga atu i hanga i tona whare herehere. pūtau Sex, tohuhema ranei, kua whakaputaina e te whēkau motuhake (sex), e te āhuatanga ratou i te aroaro o te kotahi (haploid) huinga o pūira. Ka rite ki ta matou i matau, puta hanganga kākano rite ki te hua o te uniana o rua tohuhema, e te tikanga e kei reira he rua (diploid) huinga o kawe DNA. pūtau ahurei, hoatu ara ki te rauropi hou, i te whakamāramatanga, pūtaiao, he totipotent. E ko, ko reira e taea ki te whakaputa i tino tetahi pūtau o te tinana. He aha atu hiahia i roto i tenei hanganga pūtau? Ko te whakatō kākano tuwhatuwhaia tuatahi kihai i rite ki te pūtau auau. I mua wehenga kahore wā o te tupu, me rite ki te hua ka iti iho i te mea o mua ia pūtau tamahine o muri. Ka rite ki te hua o fragmentations ngā, te hua manu wairakau riro rite kākano maperi.

Ki te whakaaro tatou ki te tukanga katoa o te whanaketanga o te ira rite te katoa, he taea reira ki te whakahoki i te pātai o te mea ko te whakatō kākano, e whai ake. Ko tetahi o nga wāhanga o tona whanaketanga. whakaaro te taahiraa matamua i roto i tenei take e tohuhema, a kua āhuatanga nga kaupae muri nga huringa ngā i roto i te whakatō kākano. Tenei ko nga taumata ngā o pārōnaki o te iroriki. Next, i muri i te whakatō kākano atamira - morula (kahore kōhao i roto i te hanganga), aru e te blastula (kukune kotahi), te gastrula (toru-apa kukune) hopea neurula, e pai haere ki organogenesis.

Ratau, mōhio tatou he wāhi ngā: pai kia roa te wā whakatō kākano ki te rauropi ora. Tenei tupu i roto i te harore me te pükohu. I muri i te kikiritanga me te hanganga o te pūtau diploid riro te reira pahoho me tonu mo te wa roa. I roto i tenei take, ka karanga te pūtau zygospore. I roto i te tangata, te wā toenga ko e toru tekau anake haora. I tenei wa, kei te neke te ira o te heke mai ki te pūkano ki te kōpū, i reira te wahi o te wā e te implantation o te ovum i roto i te ararewa. Whakapōrearea i te rere noa o te tukanga iho me te whanaketanga atu o te whakatō kākano kia āhuatanga kino pērā i irakētanga i te taumata o ngā ira takitahi ranei pūira katoa, te whakamahi o te waipiro wahine, taero whakapōauau, etahi rongoā, paowa, mate viral.

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