Ngā Tauira Pātai e Matapaki ana i te Mana Kotahi
I roto i te ira, ko te codominance he āhuatanga e whakaatuhia ana ngā ira rerekē e rua o te ira i roto i te momo āhua o te tangata. He rerekē tēnei āhuatanga i te dominance noa, e taea ai e tetahi ira te huna katoa i te whakaaturanga o tetahi atu. Ko te codominance he take e kaha ana ngā ira e rua, ā, e kitea ana i roto i te rauropi heterozygous. He maha ngā wā ka kōrerohia te codominance i roto i te horopaki o ngā momo toto tangata me ngā āhuatanga tae huruhuru i roto i ētahi kararehe. Ka tūhuratia e tēnei tuhinga te ariā o te codominance i roto i te hōhonutanga mā roto i ngā tauira rapanga me te matapakinga.
Te Mārama ki te Mana Kotahi
I mua i te urunga atu ki ngā tauira pātai, me mārama tātou ki te tikanga o te codominance. Hei tauira, mō ngā momo toto tangata, he codominant ngā ira A me B. Ko te tikanga tēnei, mēnā kei te tangata ngā ira A me B (ira momo AB), ka whakaatuhia ngā mea e rua, ā, ka hua ake ko te momo toto AB.
Ko tētahi atu tauira o te codominance ka kitea i roto i te tae o te huruhuru o ngā kau. Me kī he ira tā tātou mō te huruhuru whero (R) me te ira tā tātou mō te huruhuru mā (W). Mena he ira R kotahi tō te kau, he ira W kotahi, ka whero-mā te huruhuru, e mōhiotia ana ko te "roan".
Ngā Tauira Pātai mō te Mana Kotahi
Pātai 1: Momo Toto
Pātai: He momo toto A (ira AA) tō te pāpā, ā, he momo toto B (ira BB) tō te whaea. Mēnā he tamaiti tā rāua, he aha te momo toto ka puta mai i te tamaiti?
Kōrero:
1. Tāutuhia ngā momoira o ngā mātua:
– Matua: AA
– Whaea: BB
2. Nā te mea he toto matua-kotahi ngā momo toto A me B, ka riro i ngā tamariki tētahi ira kotahi mai i ia mātua.
3. Ko ngā huinga e taea ana mō ngā tamariki ko:
– Nā te matua: A
– Mai i te whaea: B
4. Nō reira, ko te huinga AB anake ka taea e ngā tamariki te whiwhi.
5. Nō reira, he 100% te tūponotanga o ia tamaiti ki te whai momo toto AB.
Pātai 2: Huruhuru Heihei
Pātai: Ka moea he heihei huruhuru pango (BB) ki tētahi heihei huruhuru mā (WW). He aha te tae o ngā huruhuru o ngā pi, mēnā he ira hono-rua te pango me te mā?
Kōrero:
1. Tāutuhia ngā momoira o ngā mātua:
– Heihei huruhuru mangu: BB
– Heihei huruhuru mā: WW
2. I roto i ngā pīpī (uri F1), ka riro i a rātou tētahi ira kotahi mai i ia mātua.
3. Ko te huinga mō ngā pīpī ko:
– Mai i te heihei pango: B
– Mai i te heihei mā: W
4. Ka whai i te momoira BW te pīpī, e whakaatu ana i te momoira whakauru (he huruhuru mangu me te mā, he iraira, he "iraira" rānei).
5. Nō reira, ka whai huruhuru BW ngā heihei uri F1 katoa.
Pātai 3: Tae Tipu
Pātai: I roto i ngā tipu rōhi, he hononga matua te ira whero (R) me te ira mā (W). Mēnā ka honoa tētahi tipu whero ki tētahi tipu mā, he aha te tae o ngā putiputi ka puta mai i ā rātou uri?
Kōrero:
1. Te tautuhi i ngā momoira:
– Te tipu whero: RR
– Ngā tipu mā: WW
2. Ko ngā uri o ngā tipu (uri F1) koia ēnei:
– Mai i te tipu whero: R
– Mai i ngā tipu mā: W
3. Ka puta te momoira RW i roto i te uri ka puta ai ngā momoira whakauru (hei tauira, he putiputi he āhua whero, he mā hoki).
4. Nō reira, ka puta he putiputi whero-mā i ngā uri katoa o tēnei whakawhiti.
Whakamutunga
Mā roto i ngā tauira i runga ake nei, ka kitea te pānga o te ariā o te codominance i roto i ngā horopaki rerekē. Ka whakaratohia e te codominance ngā rerekētanga whakamere o te taiao mā te tuku i ngā āhuatanga rerekē e rua kia whakaatuhia i te wā kotahi i roto i tētahi rauropi. Ka whakarei ake tēnei i te kanorau ira, ā, ka āwhina i a tātou ki te mārama ki ngā tauira tuku iho he uaua ake i te mana rangatira noa iho. Ehara i te mea he mea nui anake te mārama ki te codominance i roto i te ako i te koiora me te ira, engari ka whakaratohia hoki he māramatanga ki te tukunga iho o ētahi āhuatanga i roto i ngā tipu me ngā kararehe, tae atu ki te tangata.
Hei whakamātautau i tō māramatanga hohonu ake ki te codominance, ka taea e koe te waihanga i ētahi atu horopaki, te whakamahi rānei i ngā tauira e whai wāhi ana ki ngā āhuatanga codominant rerekē. Mā tēnei ka āwhina i te whakapakari i ngā ariā, ā, ka taea hoki e koe te whakamahi i ēnei mātāpono i roto i ngā horopaki rerekē. Ko te codominance tētahi wāhanga noa iho o te whānuitanga o ngā tauira tuku iho ira, ā, mā te mārama ki ēnei tauira, ka whiwhi tātou i tētahi pikitia whānui ake mō te mīharo o te rerekētanga o te ora.
