Kodi genetic recombination mu biology ndi chiyani?
Kodi genetic recombination mu biology ndi chiyani?
Anonim

Kusintha kwa chibadwa (wotchedwanso chibadwa reshuffling) ndikusinthana kwa chibadwa zinthu zomwe zili pakati pa zamoyo zosiyanasiyana zomwe zimatsogolera kupanga ana okhala ndi mikhalidwe yosiyanasiyana yomwe imasiyana ndi yomwe imapezeka mwa kholo lililonse.

Poganizira izi, recombination mu biology ndi chiyani?

Recombination mu meiosis. Recombination ndi njira yomwe zidutswa za DNA zimathyoledwa ndikuphatikizidwanso kupanga mitundu yatsopano ya alleles. Izi recombination ndondomeko imapanga mitundu yosiyanasiyana ya majini pamlingo wa majini omwe amasonyeza kusiyana kwa ma DNA a zamoyo zosiyanasiyana.

Kuphatikiza apo, kodi njira yophatikizananso chibadwa ndi yotani? Kuyanjananso kwa chibadwa ndi zovuta ndondomeko zomwe zimaphatikizapo kulumikiza tingwe ta DNA tofanana, kusweka ndendende kwa chingwe chilichonse, kusinthana kofanana kwa zigawo za DNA pakati pa zingwe ziwirizo, ndi kusindikiza mamolekyu a DNA ophatikizananso pogwiritsa ntchito ma enzyme otchedwa ligases.

Wina angafunsenso, kodi chitsanzo cha chibadwa cha recombination ndi chiyani?

General kapena homologous recombination zimachitika pakati pa mamolekyu a DNA ofanana kwambiri, monga ma chromosome a homologous mu zamoyo za diploid. Zabwino zitsanzo ndi machitidwe ophatikizira bacteriophage, monga L, mu chromosome ya bakiteriya ndi kukonzanso kwa immunoglobulin. majini mu zinyama za msana.

Kodi njira zitatu za genetic recombination ndi ziti?

Komabe, mabakiteriya apeza njira kuwonjezera awo chibadwa zosiyanasiyana kudzera njira zitatu recombination: kusintha, kusintha ndi kugwirizanitsa.

Yotchuka ndi mutu