Nishan (wazaka 28) anabwera ku chipatala tsiku limenelo ali ndi nkhawa komanso kukhumudwa. Atangolowa m'chipindamo, anapukuta khosi lake ndikuyang'ana pansi, nakhala chete kwa nthawi yayitali.
"Dokotala, ndinawerenga nkhani pa intaneti usiku watha yokhudza buku la Richard Dawkins lakuti 'The Selfish Gene'. Malinga ndi bukuli, tonsefe ndife makina chabe, monga maloboti, opangidwa kuti abereke majini, ogwira ntchito molingana ndi majini athu. Bambo anga ndi agogo anga ali ndi kuthamanga kwa magazi ndi matenda a shuga. Ndiye kodi zimenezi zikutanthauza kuti majini anga adapangidwa kuti andidwalitse mofanana? Kodi tilibe ufulu wolamulira miyoyo yathu?" Nishan anafunsa ndi mantha aakulu.
Ndinayang'ana Nishan ndipo ndinamwetulira mokoma mtima. "Nishan, usachite mantha. Richard Dawkins, yemwe analemba bukuli, anagwiritsa ntchito mawu oti 'dyera' ngati fanizo la zinyama zokha. Izi sizikutanthauza kuti tilibe ufulu wokhala ndi moyo. Ngakhale majini ndiye pulani ya miyoyo yathu, sitiri maloboti okha. Tikhoza kulamulira momwe majini athu amagwirira ntchito kudzera mu zizolowezi zathu zabwino, zakudya, komanso thanzi lathu la maganizo. Mu sayansi ya zamankhwala, izi zimatchedwa epigenetics. Chifukwa chake lero, tiyeni tikambirane za ubale womwe ulipo pakati pa lingaliro la sayansi la jini lodzikonda ndi thanzi lathu lenileni."
Kodi majini ndi chiyani?
Majini ndi ma code ang'onoang'ono a zamoyo omwe ali ndi malangizo achinsinsi ofunikira kuti thupi lathu lonse lipange ndikuyendetsa bwino. Amapezeka mu mamolekyu a DNA mkati mwa maselo athu.
Majini amenewa samangotanthauza mtundu wa maso athu, kutalika, ndi mtundu wa khungu lathu, komanso momwe chitetezo chathu cha mthupi chimalimbana ndi matenda. Ngakhale majini angawoneke ngati zinthu zopanda moyo, ndi mphamvu yaikulu yomwe imachirikiza moyo padziko lapansi.
Kodi majini ndi osafadi?
Monga anthu, tonsefe timafa tsiku lina. Matupi athu si amuyaya. Koma majini omwe ali m'thupi lathu safa. Amapatsiridwa kuchokera ku mibadwomibadwo kudzera mwa ana athu ndi zidzukulu zathu.
Majini ena amatha kukhala ndi moyo kwa zaka mamiliyoni ambiri osasintha m'thupi la nyama ndi anthu. Ichi ndichifukwa chake Richard Dawkins adatcha majini kuti "osafa obwerezabwereza." Kusankha kwachilengedwe kumatsimikizira kuti majini okhawo omwe ali oyenera chilengedwe komanso omwe angapitirire bwino kwa mbadwo wotsatira ndi omwe amapulumuka.
Makina achilengedwe omwe amanyamula majini (Makina Opulumukira)
Malinga ndi lingaliro la "jini lodzikonda," matupi athu, nyama ndi anthu onse, adapangidwa kuti asunge ndikupatsa majini athu ku mibadwo yotsatira. Dawkins adatcha matupi athu "makina opulumukira" a majini.
- Kudya: Timadya kuti tipeze mphamvu zomwe timafunikira kuti tisunge matupi athu ndikuteteza majini athu.
- Kusamalira anapiye:Zinyama zimayesetsa kwambiri kuteteza ana awo, chifukwa zimalandira 50% ya majini awo.
- Kukopeka ndi kugonana: Mbalame za pikoko zimaonetsa nthenga zawo zokongola kuti zikope mnzawo ndikupereka majini awo kwa mbadwo wotsatira.
Mpikisano ndi Mgwirizano mu Chisinthiko
Kupulumuka kwa moyo ndi mpikisano wokhazikika. Mpikisano uwu umachitika makamaka pakati pa majini.
Mpikisano pakati pa cheetah ndi nswala
Majini a cheetah amayesetsa kuwapatsa mphamvu yothamanga mwachangu komanso zikhadabo zakuthwa. Kuti cheetah athe kugwira nyama ndikupulumuka. Kumbali ina, majini a nswala amayesetsa kuwapatsa mphamvu yofulumira komanso mphamvu yobisala. Motero, majini a mbali zonse ziwiri amayesa kupambana wina ndi mnzake, ndipo izi zimatchedwa mpikisano wa zida zosinthika.
Mgwirizano wa Chisinthiko
Ngakhale majini ndi odzikonda, nthawi zina mgwirizano ndi wofunikira kuti majini apulumuke. Mwachitsanzo, njuchi zikamayamwa mungu m'maluwa, zimayamwa timadzi tokoma. Mgwirizano pakati pa njuchi ndi duwa umathandiza kuti majini a mbali zonse ziwiri apitirire bwino.
Majini a Hox: Makapisozi a nthawi ya chilengedwe
Majini a Hox ndi gulu lofunika kwambiri la majini omwe amasankha kapangidwe ka thupi (mutu, thunthu, miyendo) la nyama.
Majini amenewa akhala osasintha kwambiri kwa zaka mazana ambiri. Kufanana pakati pa majini a Hox omwe amasankha mawonekedwe a thupi la ntchentche ndi majini a Hox omwe amasankha mawonekedwe a thupi la munthu kwadabwitsa asayansi. Awa ndi makapiso enieni a chilengedwe, ndipo uwu ndi umboni wamphamvu wakuti zamoyo zonse padziko lapansi zinachokera ku kholo limodzi.
Jini ladyera ndi khalidwe la anthu
Kumbuyo kwa khalidwe lathu lalikulu kuli malangizo operekedwa ndi ubongo kuti majini apitirizebe kukhalapo.
- Chikondi cha makolo: Makolo ali okonzeka kupereka nsembe iliyonse chifukwa cha ana awo chifukwa majini awo alipo mwa ana. Mu majini, izi zimatchedwa "kusankha abale".
- Chikondi ndi Ukwati: Tikasankha mnzathu, mosadziwa timakonda kusankha munthu wathanzi komanso amene ali ndi chitetezo chamthupi chabwino, ndi cholinga chobereka ana amphamvu.
🚨 Malangizo ndi malangizo a dokotala
Ngati pali matenda a majini omwe amachitika m'banja mwanu, ndikofunikira kuwadziwa.
Nthawi zina muyenera kuonana ndi dokotala nthawi yomweyo ndikupempha upangiri:
- Ngati achibale angapo apafupi adadwala khansa, matenda a mtima, kapena impso ali aang'ono.
- Ngati mbali zonse ziwiri za banja la anthu omwe akufuna kukwatirana zili ndi matenda obadwa nawo a magazi monga Thalassemia.
- Ngati mukukumana ndi vuto la kutaya mimba mobwerezabwereza mukuyembekezera mwana.
Zoyenera kuchita ndi zosayenera kuchita
| ✔️ Zinthu zoti muchite (kuchita) | ❌ Zosayenera kuchita |
|---|---|
| Dziwani bwino mbiri ya banja lanu. | Musaope kuganiza kuti chifukwa chakuti m'banja mwanu muli matenda, mudzadwalanso matenda omwewo. |
| Lamulirani zotsatira zoyipa za majini kudzera mu zakudya zabwino komanso moyo wochita zinthu mwachangu. | Musamadzivutitse maganizo mosayenera poganizira za matenda a majini popanda upangiri wa dokotala ndi kuyezetsa. |
| Ngati kuli kofunikira, funsani uphungu wa majini kutengera uphungu wa dokotala. | Pewani kuphonya mayeso omwe dokotala wanu wakupatsani panthawi ya mimba. |
❓ Mafunso ena omwe mungakhale nawo (FAQ)
Kodi jini lodzikonda limatanthauza kuti tonsefe timabadwa odzikonda?
Ayi. Mawu oti 'dyera' akugwiritsidwa ntchito pano pofotokoza chizolowezi chachibadwa cha majini chopereka makope awo kwa mbadwo wotsatira, osati pofotokoza maganizo a anthu kapena khalidwe labwino. Ndipotu, chiphunzitsochi chikufotokoza kuti mgwirizano ndi kudzipereka pakati pa anthu ndi nyama nthawi zambiri zimathandiza majini kukhalabe ndi moyo.
Ngati wina m'banja langa ali ndi matenda a majini, kodi inenso ndingathe kuwatenga ?
Ayi. Ngakhale mbiri ya banja ingakulitse chiopsezo chanu chotenga matenda, sizikutanthauza kuti mudzakhala nawo 100%. Matenda ambiri, monga kuthamanga kwa magazi, matenda a shuga, ndi matenda a mtima, ndi osiyanasiyana. Izi zikutanthauza kuti, kuwonjezera pa majini, zinthu zina monga moyo wanu, zakudya, masewera olimbitsa thupi, ndi nkhawa zimatsimikizanso ngati majini amenewo ayamba kugwira ntchito kapena ayi.
Kodi kuyezetsa majini kungathe kuzindikira matenda msanga? ▼
Inde. Malinga ndi sayansi ya zamankhwala yomwe ilipo panopa, mayeso a majini pogwiritsa ntchito chitsanzo cha magazi amatha kuzindikira matenda obadwa nawo omwe mungakhale pachiwopsezo chotenga matenda mtsogolo (monga kusintha kwa majini a BRCA1/BRCA2 komwe kumatsimikiza chiopsezo cha khansa ya m'mawere). Kuzindikira msanga kumeneku kumakupatsani mwayi wochitapo kanthu kofunikira pazachipatala komanso kusintha moyo wanu kuti mupewe matendawa.
Kodi kusintha majini pogwiritsa ntchito ukadaulo ngati CRISPR n'kotetezeka? ▼
CRISPR-Cas9 ndi ukadaulo wapamwamba kwambiri womwe ungadule ndikusintha DNA molondola. Pakadali pano ikuyesedwa kuchipatala kuti ichite matenda akuluakulu a majini monga hemophilia ndi sickle cell anemia, ndipo yapambana kwambiri. Komabe, kafukufuku wasayansi wokhwima komanso njira zowongolera zomwe zikuchitika padziko lonse lapansi zokhudzana ndi chitetezo chake komanso makhalidwe abwino.
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