BopheloMoriana

Ke seo phetoho liphatseng tsa lefutso?

Liphetoho liphatseng tsa lefutso li bitsoa liphetoho itlelang feela ka sebōpeho sa DNA ea lintho tse phelang, ea isang ho ho hlaha ha e sa tloaelehang tse sa tšoaneng kgolo le ntshetsopele. Kahoo, re nahana ka phetoho liphatseng tsa lefutso hore bo joalo, bakang lona, 'me tse teng ka ea saense e ea tlhophiso. E lokela boela lefa a lebisa tlhokomelo ho phello ea genotype ka liphetoho tsa tlhaho.

Ke seo phetoho liphatseng tsa lefutso?

The bo-rasaense ba bolela hore liphetoho tse bang teng teng 'me kamehla o teng' meleng ka ho feletseng tsa libōpuoa tsohle tse phelang lefatšeng, ho feta moo, ba ile ba ka ho ketekoa ho fihlela ho makholo a 'maloa ka' mele e 'ngoe. Ponahalo ea tiea bona, 'me e itšetlehile ka mabaka afe ba ne ba halefile le hore a utloa bohloko ketane liphatsa tsa lefutso.

Lisosa tsa liphetoho liphatseng tsa lefutso

Lisosa tsa liphetoho liphatseng tsa lefutso e ka ba tse fapa-fapaneng haholo, 'me ba e ka ba ka tlhaho e seng feela, empa hape artificially ka laboratoring. Bo-rasaense ba geneticists hlwaya lintlha tse latelang bakeng sa liphetoho ho:

1) mahlaseli (ionizing le X) - le mahlaseli a ntšang mahlaseli a kotsi ea fetang 'mele fapana le elektrone liqoso tsa liathomo, ho fellang ka ho qhala ya tshebetso e tloaelehileng ea lik'hemik'hale le dithulaganyo tsa likokoana-hloko le physico-lik'hemik'hale;

2) ho eketseha ha mocheso oa 'mele le ka boela etsa hore liphetoho ka lebaka la ho feteng le mokoka monyako' mele;

3) ka fission ea DNA seleng e ka 'na ea ba le tieho le kgolo ya ka linako tse ling ho feta tekano e ka potlako;

4) "taboha" seleng ea DNA, ka mor'a moo esita le haeba ho tsosolosoa ke ke ha khoneha hore a khutlele ho athomo ho boemo ba bona ba pele, e leng e etsa hore liphetoho tseo ke keng ea qojoa.

tlhophiso ea liphetoho liphatseng tsa lefutso

lefatše recites fetang 30 liphetoho tsa genotypes le matamo phatsa ea lefutso tsa lintho tse phelang le bakoang ke liphetoho liphatseng tsa lefutso phelang, 'me ba ile ba ba hase kamehla boletsoe ka malformations Link kapa ka hare, ba bangata ba bona ba se nang kotsi haholo' me u se ke ua etsa hore boemong bo sa thabiseng. Ho fumana karabo ea potso e reng: "ke phetoho liphatseng tsa lefutso ke eng" - ka sebetsa ho le tlhophiso le mutogenov, tse hlophisitsoe ho itšetlehile ka bakang bona ka sehloohong.

1. Ka ho typology ea lisele fetohile khetholla pakeng tsa somatic le ho ikatisa phetoho liphatseng tsa lefutso. Pele o ile a re ka lisele tse mammalian ea lintho tse phelang, ho e fetisoa feela ka ho latellanang. E le busa, e thehoa esita le nakong ntshetsopeleng ya embryo le ka pōpelong (ka mohlala, a fapaneng 'mala mahlo le sa t.). Bobeli ba atisa ho bonahatsa ka limela le invertebrates, ho bakoa ke ho a sa thabiseng lintlha Link tikoloho (kgolo ya li-fungus ka sefate 'me sa t. D.).

2. sebakeng lisele mutated phapang liphetoho liphatseng tsa lefutso tsa nyutlelie hore tshusumetso ka kotloloho ka DNA (u se ke ua ho arabela kalafo), le cytoplasmic - amana liphetoho liseleng tsohle le maro a hore sebelisana ka hare ea nate (phekoleha kapa ho troubleshoot, liphetoho liphatseng tsa lefutso tse joalo li boetse o bitsoa atavism).

3. Ho itšetlehile ka mabaka a hore halefile ponahalo ea liphetoho khetholla tsa tlhaho (hlakile) liphetoho liphatseng tsa lefutso li etsahala ka tšohanyetso le ntle ho lebaka leha e le efe, 'me maiketsetso (hlohlelletsoa) - e ho hloleha ho ea ka tšebetso tloaelehileng ea dithulaganyo lik'hemik'hale' meleng.

4. Ho itšetlehile ka ho tiea la liphetoho tse bang teng li arotsoe ka:

1) genomic - liphetoho palong ea disete tsa chromosomes (lefu Down e) ;

2) liphetoho liphatseng tsa lefutso phatsa ea lefutso - liphetoho ka tatelano nucleotide hahe ka sebopeho sa palesa e ncha DNA (phenylketonuria).

e bolelang liphetoho liphatseng tsa lefutso

Maemong a mangata, ba ile ba ba kotsi 'meleng, hobane kena-kenana le kgolo ya ho tloaelehile le ntshetsopele, le ho ka linako tse ling etsa hore lefu. liphetoho liphatseng tsa lefutso Useful u se ke ke sa etsahala kamehla, esita le haeba ba nehe supernormal. Ba E le hore bakeng sa bohato ba sebetsa ka mafolofolo ba khetha tsela ea tlhaho , le ho ama tlhopho ea lintho tse phelang, ea isang ho ho hlaha ha mefuta e mecha kapa degeneration. Kahoo, ho araba potso e reng: "Ke ntho efe e phetoho liphatseng tsa lefutso" - ke habohlokoa ho hlokomela hore ena ke liphetoho tse nyenyane ka ho sebopeho sa DNA, e ama ntshetsopele le mosebetsi oa bohlokoa oa ho ba phelang eohle.

Similar articles

 

 

 

 

Trending Now

 

 

 

 

Newest

Copyright © 2018 st.birmiss.com. Theme powered by WordPress.