Ko te huringa ora o ngā pūtau - te wā i tona whanau ki te wehenga motuhake te mate ranei

Ko te huringa ora o ngā pūtau - te wā o te kōwae pūmotu o te ora i töna tïmatanga ki tona wehenga ake o te wehenga ranei te mate. Kei roto te reira i te huringa taiao katoa e mamae organelles e mau i roto i ona mahi.

Runga anō i tona whakahaere, me te paerewa whāiti huringa pūtau e taea muri i te 30 meneti, me te 3 ra. Hei tauira, ka kuru te pūtau i roto i echinoderms te huringa ora ko 30 meneti, me kiriwaho intestinal i roto i te tangata - e 12 haora. He hoki aua wae taketake o ora, e kore e nei i wehea, arā, e kore e uri, e te raveraa i ratou ratou mahi tikanga, me te mate - .. te hunga i karere, weu uaua striated. Ka taea te wehea whaiaro huringa ora pūtau ki e rua wā: interphase, te wā o te tipu me te whāū ranei - wehenga wā. Interphase ngā, aua, he maha o ngā wāhanga:

1. G1 (postmitotic) - wāhanga tupu tuatahi. I tenei wā, te whakaminenga o te mRNA, pūmua me ētahi atu wāhanga pūtau.
2. S (waihanga) - puta te tāruaruatanga DNA, e arata'i ki te tuaruatia ai te rauemi ira. I te mutunga o te wāhanga e rua o te puka DNA helix rua taua. Ia o nga whenu o te waikawa deoxyribonucleic ngā kotahi tōrino tawhito, me te tuarua - he tetahi hou, i hanga e runga i te pūtake o te kïnakitanga.
3. G2 (premitotic) - ko te tukanga hanga, e ngā ako o ngā hapa i hanga i roto i ariā DNA i roto i te wāhanga o mua. Whakaemi ngā matūkai, pūngao, tonu ki te synthesize pūmua me te RNA.

Ko te huānga matua ko te reproduction huringa mitotic o proliferative pūtau e haamata tika i muri i G2 ranei. Ko reira he huinga o ngā tukanga e puta i roto i te kōwae hanganga timatanga o ora i tetahi wehenga ki te atu pito, ka hanga i te whakatupuranga hou o ngā pūtau āpiti. Whāū Ko te momo matua o te wehenga somatic (kore whai wāhi i roto i te uri fakasekisualé) o ngā waeine pūmotu o kaiao karihi.

He te huringa ora pūtau faufaa mo te tinana, te whakarato i te haumaru o te maha, me te āhua o ngā pūira āhuatanga o ia momo (karyotype), na e mea faufaa ia kua haere wā wehenga katoa, kahore tetahi ngangau. tito whāū te o 4 ngā wāhanga karapīpiti:

1. Prophase. I roto i tenei wā, puta te wehenga pūtau me te rerekētanga i waenganui i te centrioles amo, e, e toaati e te wehenga muka. Na roto i te mutunga o tenei nucleoli wā fatifati i pūira thickened ka poroa, i.e. ko ratou tōtā.
2. Metaphase. hāngai hanganga Nucleoprotein haere te pūtau weheruatanga i hanga pereti metaphase. Mai te constriction tuatahi o nga pūira. Na, kua wehea ia o ratou ki e rua chromatids.
3. Anaphase. I roto i tenei wā neke obrazovashiesya pūira tamahine ki amo rerekē, kei hea he ratou flat i roto i, me te mālōlō.
4. Telophase. Faaho'ihia mai te nucleolus me puta te wehenga matua o te cytoplasm.

Ko te kupu, ko te huringa pūtau - te wa o te ora i whanau ki te kōwae timatanga o te mate o te hunga ora.