HangangaPūtaiao

Terenga iranga: āhuatanga taketake o te tukanga

wahi DNA i roto i nei kei te karanga a etahi, he wāhi ira te. Kia roto i te reira i putanga kē o te mōhiohio ā-ira - ngā irarā. I roto i tetahi taupori, i reira e he maha nui o ngā hanganga raraunga. Ko te kupu te maua e te wahi o te irarā ngā i roto i te genome o te taupori whānui te ingoa o nga iarere ira.

Ki te irakētanga etahi arahina ki te huringa kukuwhatanga o ngā momo, kia kia feunga tiketike tona auau, ka kua ki kia whakaritea i roto i te mau taata katoa o ia whakatupuranga te irarā mutant. Ki te nui iti o ona huringa mutational kore e taea e ki te whakaawe i te hītori whanaketanga o kaiao.

Hei irarā tupu auau, kia mahi etahi āhuatanga - terenga iranga, hekenga me te kōwhiringa tūturu.

terenga iranga - ko te tupu irarā matapōkere i raro i te mana o te maha ngā kaupapa e ngā me whai he huru stochastic tenei. hono ana tēnei tukanga te ki te meka e kore takitahi katoa i roto i te taupori e whai wāhi i roto i te uri. Ko reira tino āhuatanga o te tohu mate ranei e he onge, engari e tika ana ki te kore o te whiriwhiri e taea te rongoa i roto i te utuafare noa te taupori katoa o te rahi iti mo te wa roa ranei. Kei te maha kitea tēnei tauira i roto i te taupori iti, e kore te mea neke atu i te 1,000 takitahi te maha o nei, no te mea i roto i tenei take, ko te hekenga tino iti.

I roto i te tikanga ki te mahino pai te terenga iranga, kia kia mōhio o enei ture. I roto i te wā i reira te auau irarā ko 0, i angitu whakatupuranga e kore e huri i te reira. Ki te tae te reira 1, ka mea tatou e whakaritea te ira i roto i te taupori te. Random terenga iranga, me te ko te putanga o te tukanga whakatika ki mate tukutahi o tetahi irarā. Nuinga o ngā wā, e taea te ata tenei tauira ka kore e meinga te irakētanga me te hekenga huringa pūmau i roto i te wāhanga o te huanui.

Mai te auautanga ira he pūāhua kore-Anga, te whakaiti reira te kanorau o ngā momo, me whakanuia ana hoki te rerekētanga i waenganui i te taupori rohe. E tano ia tapao e counteracts tenei te hekenga, i roto i nei ngā rōpū rerekē o rauropi faaite ratou irarā. Me hoki tatou mea e terenga iranga kua tata kore pānga i runga i te auau o ngā ira takitahi i roto i ngā taupori nui, engari i roto i ngā rōpū iti, e taea e te reira i te whakatakotoria take whanaketanga. Kei te huri te maha o ngā irarā tino. kia ngatangatá ngaro ētahi ira, e nui ote kai te kanorau ira.

Ka rite ki te tauira, urutā papatipu, i muri i kawea te taupori i roto i ngā whakaora tika ki ona māngai e rave rahi. Ano, ko uri katoa ira tupuna ōrite. I muri whakarite roha allelic kanorau kaiwhakanao Tuhinga te Here haere e whakatairanga i te rerekētanga tupu i te taumata ira ranei.

faaiteraa Extreme o te terenga iranga taea karanga ahua taupori rawa hou i hanga e nei i te torutoru noa takitahi - te pānga kaiwhakarewa pera-ka karanga.

Me mea te reira e te tauira o te huinga ira hanganga ako hangarau koiora. te whawhe ira - he tikanga o tenei pūtaiao, e taea ai e koe te whakawhiti mōhiohio ā-ira. A, no te taea tenei te whakawhitinga ira ki te mahi ki te arai momo, me te whakawhiwhi e hiahiatia ana āhuatanga kaiao.

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