Chiwonetsero cha Chiyambitso cha DNA ndi njira yoyambira mu biology ya maselo olerera, kusewera gawo lofunikira mu kafukufuku wosiyanasiyana wa kafukufuku komanso kugwiritsa ntchito mankhwala azachipatala. Kukula kwa Chuma Chakale cha DNA DNARD
Kuyambitsa gawo la mankhwalawa kwa cell achita umboni pazaka khumi zapitazi, makamaka pakukulitsa ndi kugwiritsa ntchito forler wachilengedwe (NK). Ma cell amtunduwu, omwe amatenga mbali yofunika kwambiri mu chitetezo cha thupi,