Joalokaha u tseba, maqhubu a liphatsa tsa lefutso a mofuta o le mong a tsitsisa ka nako e itseng. Hamorao ka letamong la liphatsa tsa lefutso tsa mofuta ona, liphatsa tsa lefutso ha li fetohe. Sena ke sona se boleloang ke molao oa Hardy-Weinberg. Empa sena se ka etsahala feela ha ho se na khetho le phallo ea batho ba mofuta o le mong, mme ho tšela pakeng tsa bona ho etsahala ka tšohanyetso. Ntle le moo, ho tlameha ho ba le palo e sa feleng ea mefuta ea sechaba se le seng. 'Me ho hlakile hore ka tlhaho ho ke ke ha khoneha ho etsa maemo ana ka lekholo. Ho latela sena hore letamo la lefutso la batho ba tlhaho le ke ke la tsitsa ka ho felletseng.
Phetoho ea letamo la liphatsa tsa sechaba
Ho ba le letamo le itseng la lefutso, le laoloang ke khetho ea tlhaho, mefuta e meng e abeloa sebaka sa pele liphetohong tsa phetoho ea baahi. Liphetoho tsohle tse etsahalang mofuteng o le mong ke phetoho e tobileng ea lefutso la baahi.
Letamo la liphatsa tsa lefutso le ka fetoha ha batho ba bang ba mefuta e meng ba tla ho lona. Ntle le moo, liphetoho li ka etsahala nakong ea liphetoho. Liphetoho liphatseng tsa lefutso li ka etsahala ka lebaka la tšusumetso ea tikoloho e kantle, hobane e ka ama monono oa baahi. Ka mantsoe a mang, phetoho letamong la liphatsa tsa lefutso e tla ba litholoana tsa khetho ea tlhaho. Empa haeba maemo a ho lula a fetotsoe, maqhubu a liphatsa tsa lefutso a fetileng a tla khutlisoa.
Hape, letamo la liphatsa tsa lefutso le tla fokola haeba ho hoholeha ha liphatsa tsa lefutso ho etsahala le palo e fokolang ea batho. E ka fokotseha ka mabaka a fapaneng, mme kamora moo, tsoseletso ea mofuta ona e tla be e se e na le letamo le fapaneng la lefutso. Mohlala, haeba tikoloho ea baahi ke maemo a leholimo a mabe le a batang, khetho ea liphatsa tsa lefutso e tla lebisoa tlhokomelong ea serame. Haeba ka lebaka le itseng phoofolo e hloka ho ipata, joale 'mala oa eona o tla fetoha butle-butle. Haele hantle, liphetoho tse joalo li etsahala ha baahi ba lula libakeng tse ncha. Haeba bajaki ba bang ba ikopanya le bona, lefapha la liphatsa tsa lefutso le lona le tla ntlafatsoa.
Lintho tsa phetoho ea letamo la Gene
Ntle le moo, lintlha tse fapaneng li ka fetola le phatsa ea lefutso ea baahi, mohlala:
- Ho tlolelana likobo le balekane ba sa itlhahisang, e leng tšobotsi ea batho ba bang;
- ho nyamela ha baahi ba sa tloaelehang ka lebaka la lefu la motho ea tsamaisang liphatsa tsa lefutso;
- ho hlaha ha litšitiso tse itseng, tse arotseng mefuta ena likoto tse peli, mme palo ea tsona ha e tšoane;
- lefu la hoo e ka bang halofo ea batho ka bomong, ka lebaka la koluoa kapa boemo bo bong bo sa lebelloang.
Ntle le lintlha tsena, letamo la liphatsa tsa lefutso le ka "futsaneha" haeba ho na le phallo ea batho ba nang le thepa e itseng.
