Ngā Tauira Pātai e Matapaki ana i ngā Taunakitanga Ngota me ngā Āhuatanga Rite o te DNA
I roto i te koiora, he mea nui te mahi a ngā taunakitanga ngota me ngā āhuatanga ōrite o te DNA ki te mārama ki te whanaketanga, ki ngā whanaungatanga i waenga i ngā momo, me ngā tikanga ira e ahu mai ana i te ora. Mā te whanaketanga o te hangarau, ka taea e tātou te rangahau i te hanganga o te DNA me ngā ngota kia whiwhi ai i ngā māramatanga hōhonu ki te mahi a te ora. Ka tūhuratia e tēnei tuhinga ētahi tauira raruraru me ā rātou matapakinga e pā ana ki ngā taunakitanga ngota me ngā āhuatanga ōrite o te DNA.
Ngā Taunakitanga Ngota i roto i te Whanaketanga
Ko ngā taunakitanga ngota tētahi o ngā tūāpapa o te ako i te whanaketanga. Ko te DNA i roto i ngā rauropi katoa he mea tito mai i ngā turanga hauota e whā: adenine (A), thymine (T), guanine (G), me te cytosine (C). Kei roto i te raupapa o ēnei turanga ngā mōhiohio ira e whakatau ana i ngā āhuatanga o tētahi rauropi. Ina whakatauritehia ngā raupapa DNA i waenga i ngā momo, ka taea e tātou te whakatau i te tata o te whanaungatanga whanaketanga.
Tauira Pātai 1:
Pātai: He aha i kiia ai ko ngā taunakitanga ngota ngota tētahi o ngā taunakitanga kaha rawa atu mō te ariā o te whanaketanga?
Kōrero: Ko ngā taunakitanga ngota ngota e kiia ana ko tētahi o ngā mea tino kaha mō te ariā o te whanaketanga nā te mea he whānui te DNA me ngā pūmua puta noa i ngā momo ora katoa. Ko ngā hanganga me ngā raupapatanga ngota ngota rite e tohu ana i te takenga mai kotahi. Hei tauira, he rite tonu te hemoglobin tangata ki te hemoglobin chimpanzee, e tohu ana i te tūpuna kotahi. Ko ngā tauira tiaki i roto i ngā raupapatanga waikawa amino me ngā hanganga pūmua puta noa i ngā rauropi he hua o ngā whanaungatanga whanaketanga. Ka whakapakarihia tēnei taunakitanga e te kitenga o ngā ira e tukuna iho ana i roto i ngā whakatipuranga, ā, ka taea te whai mā te tātari ngota ngota.
Te ōrite o te DNA
Ko te mahi matua a te DNA he penapena me te tuku i ngā mōhiohio ira. Ina whakatauritea te DNA i waenga i ngā rauropi, he maha ngā āhuatanga ōrite ka kitea, e whakaatu ana i tō rātou whanaketanga mai i tētahi tūpuna kotahi. He maha ngā wā ka whakamahia tēnei hei hanga rākau whakapapa e whakamārama ana i ngā whanaungatanga whanaketanga.
Tauira Pātai 2:
Pātai: Me pēhea te whakamahi i te tātaritanga ōrite o te DNA hei whakarōpū i ngā rauropi?
Kōrero: Ka whakamahia te tātaritanga ōritetanga DNA hei ine i te ōritetanga ira i waenga i ngā momo, kia taea ai e ngā kaipūtaiao te whakarōpū tika ake i ngā rauropi. Mā te whakamahi i ngā tikanga pēnei i te raupapatanga DNA, ka taea e ngā kaipūtaiao te raupapa i te ira katoa o tētahi rauropi me te whakarite ki ētahi atu ira. Ko te rite ake o ngā raupapatanga DNA i waenga i ngā momo, ko te tata ake o tō rātou whanaungatanga whanaketanga. He maha ngā wā ka whakamahia tēnei tikanga hei whakatikatika i ngā whakarōpūtanga whakarōpū i runga i te āhua me ngā taunakitanga whaitake me te tauanga.
Tauira Pātai 3:
Pātai: Whakamāramahia me pēhea te āwhina a ngā tikanga raupapatanga ira ki te whakatau i ngā whanaungatanga ā-ira i waenga i ngā momo.
Kōrero: Mā ngā tikanga raupapatanga ira ka taea e ngā kaipūtaiao te pānui i te raupapatanga o ngā turanga i roto i te ira o tētahi rauropi. Mā te whakataurite i ēnei raupapatanga ki ngā raupapatanga ira mai i ētahi atu momo, ka taea e ngā kaipūtaiao te hanga rākau whakapapa ira e whakaatu ana i ngā whanaungatanga whanaketanga i waenga i ngā momo. Ka taea e ngā rerekētanga iti i roto i ngā raupapatanga ira te tohu i ngā peka hou o ngā momo, ko ngā āhuatanga ōrite nui ake e tohu ana i ngā whanaungatanga tata. Mā ngā hangarau raupapatanga hou pēnei i te raupapatanga whakatupuranga-muri (NGS) ka taea te kohikohi raraunga tere me te nui, ka taea ai te tātari whakapapa ira tika ake.
Ngā Pātai Tauira me te Kōrero
He maha ngā rangahau me ngā tono i roto i ngā taiwhanga e pā ana ki te whakataurite i ngā raupapatanga DNA hei whakatau i ngā tūpuna, hei tātaritanga mate me te rangahau rānei. Kei raro nei ētahi tauira o ngā pātai me ngā kōrero ka tūtaki pea koe i roto i tēnei horopaki.
Tauira Pātai 4:
Pātai: Me pēhea tā tātou whakamahi i ngā mōhiohio ngota hei tautoko i te tiaki i ngā momo kararehe e tata ana ki te ngaro?
Kōrero: Ka taea e ngā mōhiohio ngota te whai wāhi nui ki te tiaki i ngā momo e tata ana ki te ngaro mā te tautuhi i ngā rerekētanga ira i roto i ngā taupori. He mea nui tēnei mō te mārama ki te hauora ira me te kaha mō te urutau mō te wā roa. Mā te raupapatanga o te DNA mai i ngā tāngata takitahi i roto i tētahi taupori e tata ana ki te ngaro, ka taea e ngā kaitiaki taiao te whakatau i te taumata o te kanorau ira i roto i te rōpū. Ka taea e tēnei te ārahi i ngā rautaki tiaki taiao hei whakanui ake i te kanorau ira, ā, nō reira, te oranga mō te wā roa o te momo.
Tauira Pātai 5:
Pātai: Matapakihia me pēhea te tautoko a te kitenga ngota ngota o te DNA i te whanaungatanga whanaketanga i waenga i te tangata me ētahi atu momo kararehe.
Kōrero: Kua whakaatuhia e ngā rangahau irahiko he rite tonu te DNA tangata me te DNA o ētahi atu momo pirimate, pērā i ngā tīmpani me ngā korira. Kua whakaatuhia e te Kaupapa Ira Tangata me ētahi atu rangahau ira he tata ki te 98–99% o te raupapa DNA o te tangata me ngā tīmpani, he tohu kaha tēnei mō tētahi tūpuna kotahi. Ko ngā rerekētanga e puta mai ana i ngā whakarerekētanga ira, te kōwhiringa taiao, me ētahi atu āhuatanga i roto i te wā whanaketanga. E whakaatu ana ēnei raraunga i tētahi tauira whanaungatanga e rite ana ki ngā taunakitanga tawhito me te āhua o te tinana.
Hangarau me ngā Taupānga
He maha ngā tono mahi me ngā tono ariā e tukuna ana e ngā whanaketanga hangarau i roto i te koiora ngota. Hei tauira, ka taea e te hangarau CRISPR te whakarerekē i ngā raupapatanga DNA, ā, ka whakamahia hoki mō te rangahau ira me te rongoā.
Tauira Pātai 6:
Pātai: He aha te pānga o te hangarau CRISPR ki ngā taunakitanga ngota me te rangahau ira ōrite?
Kōrero: He taputapu maha ngā mahi a te CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) mō te whakatika ira. He nui tōna pānga ki te rangahau ngota, nā te mea ka taea e te CRISPR te whakarerekē i te DNA tino tika. Mā tēnei ka huaki ngā whai wāhitanga mō ngā kaipūtaiao ki te ako tika i te mahi ira mā te whakarerekē, te whakakore rānei i ngā ira motuhake i roto i ngā rauropi tauira. I roto i te horopaki o te ōritetanga o te DNA, ka taea e te CRISPR te ako atu i ngā ira pea e puta mai ana i te whanaketanga mā te whakarerekē i a rātou kia kite i ngā huringa āhuahanga e puta mai ana.
Te Katinga
He mea nui ngā taunakitanga ngota ngota me ngā āhuatanga ōrite o te DNA i roto i te koiora o ēnei rā. Ehara i te mea ko te whakamārama anake i te whanaungatanga me te whanaketanga o ngā mea ora, engari he taputapu anō hoki hei whakautu i ngā pātai koiora nui. Nā te tere o te whanaketanga o ngā taputapu ngota ngota me ngā taputapu ira, he nui te tumanako ka puta mai i te ao koiora mō te māramatanga hohonu ake, whānui ake hoki mō te ora tonu.
