Te Whanaketanga Ngota i roto i ngā Mea Ora
He maha ngā wā ka māramahia te whanaketanga hei huringa i roto i te āhua tinana o ngā mea ora i roto i ngā whakatipuranga. Heoi, kei raro i ēnei huringa kitea kei reira tētahi tukanga tino ngawari, tino taketake hoki: ngā huringa i te taumata ngota. Ka kiia tēnei ko te whanaketanga ngota, te tukanga e huri ai ngā rauemi ira - te DNA me te RNA - i roto i ngā taupori o ngā rauropi i roto i te wā. Ka whakamāramahia e te whanaketanga ngota te putake o te rerekētanga ira, te tuku iho, kātahi ka whakatikatikaina e ngā tikanga pēnei i te kōwhiringa taiao, te nekenekehanga ira, me te nekehanga o ngā ira i waenga i ngā taupori. Mā te mārama ki te whanaketanga ngota, ka taea e tātou te whai i te hītori o te ora, te kite i ngā whanaungatanga i waenga i ngā momo, me te mārama ki te putanga mai o ngā āhuatanga hou pēnei i te ātete ki ngā paturopi, te urutau rānei ki ngā taiao tino kino.
Ngā Kaupapa Taketake o te Whanaketanga Ngota
I roto i ngā rauropi ora katoa, ka rongoatia ngā mōhiohio ira i roto i te raupapa o ngā turanga niukariota i roto i te DNA (te RNA rānei i roto i ētahi huaketo). Ina whakaputa uri ngā rauropi, me tārua te DNA. He tino tika te nuinga o tēnei tukanga tārua, engari kāore i te tino tika. Ka taea e ngā hapa iti e puta ana i te wā whakaputa uri te whakaputa i ngā whakarerekētanga, arā, he huringa i roto i te raupapa niukariota. Ko ngā whakarerekētanga te rauemi matua mō te whanaketanga ngota nā te mea ka hangaia he rerekētanga ira hou ka pā ki te mahi pūmua, te whakahaere ira, te pumau rānei o te ira.
Haunga ngā whakarerekētanga ira, ka puta ake hoki te rerekētanga ira mai i te whakakotahitanga (te whakawhiti i ngā wāhanga DNA i te wā e hangaia ana ngā pūtau ira), te tāruarua ira (te tāruarua o te ira hei whakaputa i tētahi tārua hou), me te whakawhiti ira whakapae (te whakawhiti ira i waenga i ngā rauropi kāore i te hono tika, he mea noa i roto i ngā huakita). Mā ēnei tikanga katoa ka whakaratohia he "wāhi whakamātautau" mō te taiao ki te hanga i te rerekētanga āhuatanga i roto i ngā taupori.
Ngā Ira Whakarerekētanga: Ngā Pūtake o te Huringa i te Taumata Ngota
Ka taea te whakarōpū i ngā whakarerekētanga ira ki ngā momo āhua. Kei reira ngā whakarerekētanga ira pūwāhi (ngā huringa i roto i te nucleotide kotahi), ngā whakaurunga (tāpiritanga o ngā nucleotide), ngā mukunga (te ngaronga o ngā nucleotide), me ngā huringa nui ake pēnei i te hurihanga ira, te whakawhiti rānei. He rerekē anō hoki te pānga o ngā whakarerekētanga ira. Ko ētahi whakarerekētanga he koretake, kāore e puta he huringa nui ki te mahi a te rauropi. Ko ētahi he kino nā te mea ka whakararuraru i te mahi a ngā pūmua nui, ā, he iti noa iho he pai nā te mea ka whakanui ake i te tūponotanga o te oranga me te whakaputa uri i roto i tētahi taiao motuhake.
He mea whakamīharo, he maha ngā huringa ngota ka puta, kāore he pānga e kitea wawetia ana. He rite tēnei ki te whakaaro ko te nuinga o te whanaketanga i te taumata DNA he koretake, me ngā huringa i ētahi wā ka pā nui ki te āhua o te tinana, ā, ka hoatu he painga whiriwhiri. Nō reira, he maha ngā wā ka puta te whanaketanga ngota hei kohikohinga o ngā huringa iti i roto i te wā roa.
Te Kōwhiringa Taiao, te Hurihuri Ira, me te Whanaketanga Kūpapa
Kia puta te rerekētanga ira, ka whakatauhia tōna mutunga e ētahi mana whanaketanga. Ko te mea tino rongonui ko te kōwhiringa taiao, te tukanga e nui ake ai te tūponotanga o ngā tāngata whai rerekētanga ki te ora, ki te whakaputa uri rānei. I te taumata ngota, ka taea e te kōwhiringa taiao te tiaki i ngā whakarerekētanga pai—hei tauira, ngā huringa o ngā pūmua kiriuhi kitakita e uaua ai te uru ki ngā paturopi—te whakakore rānei i ngā whakarerekētanga kino e whakararuraru ana i te mahi a te pūtau.
Heoi, kāore te whanaketanga i te wā katoa e peia ana e te kōwhiringa. Ka puta anō hoki te rerekētanga ira, arā, ko te huringa matapōkere o ngā auau ira, inā koa i roto i ngā taupori iti. I raro i ēnei āhuatanga, ka taea e ngā whakarerekētanga koretake te noho noa, te noho pumau rānei, ehara i te mea he pai, engari nā te tūponotanga. Ko te ariā o te ariā koretake o te whanaketanga ngota, e rongonui ana i roto i te koiora whanaketanga hou, e kī ana he maha ngā huringa ngota e whakahaerehia ana e ngā whakarerekētanga koretake e horapa ana mā te rerekētanga ira.
He mea nui te mōhio ka taea e ngā huringa ngota te noho koretake. Mā tēnei ka whakamārama he aha i rerekē ai te DNA o ngā momo e rua engari he rite tonu te āhua, he rerekē rānei, he nui ngā rerekētanga āhua engari he iti noa ngā rerekētanga ngota ira i roto i ngā ira i tātarihia.
Te Tūranga o te Tāruarua Ira me te Auahatanga Koiora
Ko tētahi o ngā tikanga tino kaha o te whanaketanga ngota ko te tāruarua ira. Ina tāruaruatia he ira, e rua ngā tārua o te rauropi: ka taea e te tārua kotahi te pupuri i tana mahi taketake, ko te tārua tuarua ia ka wātea ki te whakarerekē me te kore e whakararu i tana mahi matua. I roto i te wā, ka taea e tēnei tārua tāpiri te whiwhi mahi hou (neofunctionalization) te wehewehe rānei i te mahi tawhito (subfunctionalization).
E whakaarohia ana he maha ngā whānau ira nui i roto i ngā ira o ngā rauropi—hei tauira, ko ngā ira kaiwhakawhiwhi kakara i roto i ngā kararehe whakangote, ngā ira rānei e whakahaere ana i te whanaketanga o te kukune—i hangaia mā te tāruaruatanga auau. Nā tēnei tukanga i whakatakoto te ara mō te putanga mai o te uauatanga koiora: ka taea e ngā rauropi te whakawhanake i ngā pūnaha whakahaere ira matatau ake, ngā urupare ārai mate kanorau ake, ngā rautaki pākia pai ake rānei.
Te Whakawhiti Ira Whakapae: Te Whanaketanga Tere i roto i ngā Moroiti
I roto i ngā rauropi pēnei i te huakita me te archaea, ka puta te whanaketanga ngota ira ehara i te mea mā te hekenga poutū anake (mai i te mātua ki te uri) engari mā te whakawhiti ira whakapae anō hoki. Ka taea te whakawhiti i ngā ira mā roto i ngā plasmid, ngā huaketo huakita (bacteriophages), te tango rānei i te DNA kore utu mai i te taiao. Mā ēnei tikanga ka taea e ngā rauropi te whiwhi tere i ngā pūkenga hou.
Ko tētahi tauira tino hira ko te horapa o ngā ira ātete ki ngā paturopi. Ka taea e ētahi huakita te whiwhi i ngā ira e āhei ai rātou ki te whakakore i ngā paturopi, te pupuhi i ngā paturopi ki waho o te pūtau, te whakarerekē rānei i ngā whāinga ngota o ngā paturopi. Nā te mea ka taea e ēnei ira te neke i waenga i ngā momo huakita, ka tere te horapa o te ātete ki ngā hōhipera, ngā pāmu, me te taiao. E whakaatu ana tēnei āhuatanga i te pānga tika o te whanaketanga ngota ki te hauora o te tangata.
Te Whakahaere me te Whanaketanga o te Ira: Ehara i te mea ko ngā Huringa Pūmua anake
Kāore te whanaketanga ngota ngota e tohu i ngā huringa o ngā pūmua i ngā wā katoa. He maha ngā wā, ko ngā huringa nui o ngā āhuatanga o te rauropi e ahu mai ana i ngā huringa o te whakahaere ira: te wā e whakahohehia ai ngā ira, i roto i ēhea kiko, me te kaha o te whakaputanga. Ko ngā rohe DNA e whakahaere ana i te whakaputanga ira—pērā i ngā kaiwhakatairanga, ngā whakarei ake, me ētahi atu āhuatanga whakahaere—ka pāngia e ngā whakarerekētanga ka whakarerekē i ngā tauira whanaketanga, i te āhua rānei o te tinana.
Hei tauira, ka taea e ngā momo e rua he rite ngā pūmua te whakaatu i ngā āhua tinana rerekē nā te mea ka whakaatuhia ngā ira ōrite i ngā wā rerekē, i ngā wāhi rerekē rānei i te whanaketanga o te kukune. Mā tēnei ariā ka āwhina i te whakamārama i te whanaketanga o te āhua me te hanganga i roto i ngā kararehe, tae atu ki te kanorau o ngā āhua o te ngutu manu, ngā rerekētanga o ngā tauira tae, me ngā urutaunga tino nui i roto i ngā rauropi moana hohonu.
Ngā Karaka Irahiko me te Hanga Anō o te Hītori Whanaketanga
Ka taea te whakamahi i ngā panonitanga ira kua kohia i roto i ngā whakatipuranga hei "rēkoata" hei whai i te hītori o te ora. E kī ana te mātāpono karaka ngota, ka kohia ngā whakarerekētanga koretake i te tere pumau i roto i te wā. Mā te whakataurite i ngā rerekētanga raupapatanga ira i waenga i ngā momo, ka taea e ngā kaipūtaiao te whakatau tata i te wā i wehe ai ngā whakapapa e rua mai i tētahi tūpuna kotahi.
He mea nui tēnei tikanga i roto i te phylogenetics, arā, te hanga anō i ngā rākau whānau whanaketanga. Mā te phylogenetics ngota ka āwhina i te hura i ngā pūtake o ngā mate pāwera, te whai i te horapa o ngā huaketo, te mārama ki te whanaketanga o te tangata, me te mahere i ngā whanaungatanga i waenga i ngā rauropi puta noa i te ao. Ahakoa kāore i te tino pumau tonu ngā reiti whakarerekētanga puta noa i ngā ira katoa me ngā rauropi katoa, he taputapu tātari kaha tonu ngā karaka ngota ina whakatauritea ki ngā raraunga tawhito, ki ngā kaupapa matawhenua rānei.
Te Whanaketanga Ngota i te Oranga o Ia Rā
Ahakoa te āhua whakarāpopoto, he hononga tata te whanaketanga ngota ki te oranga tangata. Ka pāngia te horapa o ngā huaketo rewharewha me ngā coronavirus e ngā huringa ira me te kaha ki te karo i ngā urupare ārai mate e ngā huringa ira o ngā tipu kua whakatipuria. Ka pāngia te ātete ki ngā pepeke me te tauraki e te whanaketanga ngota o ngā tipu kua whakatipuria. Ahakoa i roto i te tinana tangata, ka pāngia ngā pūtau e ngā huringa ira, ā, i raro i ētahi āhuatanga, ka whai wāhi ki te whanaketanga o te mate pukupuku, he tukanga whanaketanga moroiti i te taumata pūtau.
I roto i te hangarau koiora, ka whakamahia ngā mātāpono o te whanaketanga ngota ngota mā roto i ngā tikanga pēnei i te whanaketanga ā-tikanga hei whakaputa i ngā whākōkī hou, whai hua ake. Ka "whakateretere" ngā kairangahau i te tukanga rerekētanga me te kōwhiringa i roto i te taiwhanga hei whakaputa i ngā pūmua e whai hua ana i roto i te ahumahi, te rongoā, te taiao rānei.
Te Katinga
Ko te whanaketanga ngota te pūtake o te huringa koiora. Ka whakahaerehia mā te whakarerekētanga ira, te whakakotahitanga, te tārua ira, te whakawhiti ira whakapae, me ngā huringa o te whakahaere ira, i hangaia e te kōwhiringa taiao me ngā tukanga matapōkere pēnei i te nekenekehanga ira. Mā te ako i te whanaketanga i te taumata ngota, ehara i te mea ka mārama noa tātou ki te urutau me te whanaketanga o ngā rauropi engari ka whiwhi hoki i ngā taputapu hei whakaoti rapanga o te ao tūturu: te wikitoria i te ātete ki ngā paturopi, te whakawhanake i ngā kano kano, te whakanui ake i te hua ahuwhenua, me te mārama ki ngā mate ira. Hei whakamutunga, e whakaatu ana te whanaketanga ngota he pūnaha hihiri, he pūnaha hurihuri tonu te ora, i tuhia ki te reo o ngā nucleotides, ā, i hangaia e te wā me te taiao.
