N'chifukwa chiyani munthu?

Chifukwa kuli anthu yaitali adabvuta maganizo asayansi. kubereka ndi inefficient mtengo, koma mitundu yambiri ya multicellular mwasankha njira imeneyi kusunga chibadwa chawo. Izi n'kosathandiza. Choncho n'chifukwa chiyani munthu? Akatswiri ofufuza a pa yunivesite ya East Anglia amakhulupirira kuti mwina potsiriza losweka malamulo. Iwo amanena kuti mphamvu zamoyo zinachita, lotchedwa kusankha kugonana ndi mbali yaikulu mu thanzi labwino ndi chitetezo cha mitundu chithe.

latsopano kafukufuku

Mu phunziro la m'magazini yotchedwa Nature, ndi subspecies cha kachilomboka Tribolium anasankhidwa Ataona kuti amvetse chifukwa chake ambiri mwa zamoyo multicellular amakonda kugonana mtundu wa kubalana. M'mikhalidwe ankalamulira choyezera, ofufuza anaphunzira 50 mibadwo ya kafadala zaka khumi ndi anasonkhezeredwa ndi kusankha kugonana. Ngati timatenga ngati maziko a chiphunzitso cha Charles Darwin, kusankha kugonana ndi njira imene amuna kupikisana mwayi kawetedwe, ndi akazi kusankha anthu amene ali okonzeka kubereka.

mfundo za sayansi view

"Pafupifupi onse mitundu multicellular Padziko Lapansi kubereka kudzera mu kugonana, koma linakhalapo si mophweka kufotokoza, chifukwa mtundu uwu akubweretsa katundu lalikulu ndipo amafuna ndalama kwambiri mphamvu. Komanso zoonekeratu n'chakuti theka la ana anu aakazi adzatero kwenikweni kuti mbewu. N'chifukwa chiyani mitundu nthawi ndi mphamvu zathu ngakhale ana? " - akufotokoza patsogolo kafukufuku Professor Mett Geydzh wa UEA School, ananena mawu.

ntchito kafukufuku

"Tikufuna kudziwa mmene zamoyo kusankha anagonjera zodabwitsazi ambiri, ndipo n'chifukwa chiyani dongosolo ubereki ndi wolowerera Pambuyo ndondomeko imene anthu onse kubereka popanda kugonana, monga anthu onse asexual, kungakhale kwambiri zosavuta." - ananena phunzirolo.

Zotsatira zimenezo

Asayansi anapeza kuti mpikisano yathetsedwa, ndi kafadala tabadwa awiriawiri monogamous, thanzi la anthu anakula. Tikawonetsetsa ana analandira pansi mpikisano kwambiri pamene 90 amuna anali akazi 10, anali zambiri kugonjetsedwa ndi matenda ndi ikutha.

"Pofuna kukhala zabwino za Otsutsa kupikisana ndi kukopa abwenzi, munthu ayenera kukhala wabwino pa zinthu zambiri, kotero kuti kusankha kugonana ndi ofunika kwambiri ndiponso othandiza kutseka kukhala ndi patsogolo thanzi chibadwa cha anthu - anati Gage -. Zotsatira athu amathandiza mwachindunji zoti kuti kugonana akalipo monga njira lalikulu la kubereka, chifukwa amalola kuti kusankha kugonana, kuonetsetsa kuti izi zofunika mwayi chibadwa. "

phunziro wosonyeza kuti chodabwitsa kusankha kugonana imathandiza kwambiri mu sifting masinthidwe zoipa chibadwa, kuyambira mpikisano ndi zokayikitsa kapena yaimuna ndi yaikazi chibadwa chofunika wamwamuna.