Phetoho liphatseng tsa lefutso ka ntlha e ka ho iphetola ha lintho

Phetoho liphatseng tsa lefutso tshebetso ya ho iphetola ha lintho ke e 'ngoe ea likarolo tsa bohlokoa ka ho fetisisa ho hōla ba. Maemong a mangata, qalong ho na le phello e mpe ho phenotype tsa batho ka bomong. Leha ho le joalo, e le recessive fetotsoeng alleles ba teng, 'me hangata matamong phatsa ea lefutso ka genotypes heterozygous ka locus loketseng. A re hlahlobeng ntšetsa karolo ea tsamaiso e phetoho liphatseng tsa lefutso ka ho iphetola ha lintho.

Overview

Phetoho liphatseng tsa lefutso - phetoho ka tšohanyetso tse latellanang ka halefile bohale tshebetso le mehaho ntlafalo ea lintho tse bonahalang le liphatsa tsa lefutso. Last hlophisoa hore e be e le sehlopha se busang likarolo tse sa tšoaneng ho tloha libaka le limolek'hule teng ka hare ho phatsa ea lefutso ho chromosomes le genomes. Phetoho liphatseng tsa lefutso - hatella ntlha ea baahi. Hobane e fapana le maqhubu a ea mong allele ka ho tshwana le tse ling.

phello e ntle

Ka lebaka la ho ba teng ha alleles sehole ka letamo phatsa ea lefutso ka genotype heterozygous e qheleloa ka thōko ka ho toba e le hantle mpe ka pontšo ea tšobotsi phenotypic e laoloang ke liphatsa tsa lefutso e.

Ka lebaka la mahlahahlaha a lebasetere (heterosis), liphetoho liphatseng tsa lefutso tse ngata ka boemo heterozygous hangata tlatsetsa ho solofetsa ea phelang.

Ke boloka alleles, tseo u se ke ua ba le boleng etsehang ka tikoloho ea hona joale ea teng, empa ba khona ho e reka kapa nakong e tlang, kapa ho hōla ha niches tse ling tlholeho, thehoa le pokello ea a iponahatsa.

Meaning of phetoho liphatseng tsa lefutso

Bohlokwa ke hobane a sa le ketsahalo e sa khaotseng ea liphetoho itlelang feela le ho e kopanya yona etsahala tšela tlhakantsuke mocha oa liphatsa tsa lefutso le phetoho. Sena, le eena, hona joang kapa joang isang liphetoho ea baahi ea baholo-holo. мутационного процесса состоит в повышении генетической гетерогенности. Karolo e phethoang ke tshebetso phetoho liphatseng tsa lefutso ke ho eketsa heterogeneity liphatsa tsa lefutso. Leha ho le joalo, ntle le ho sebetsa ha lintho tse ling, ho ke ke ha le boemong ba ho tataisa ntlafalo ea baahi ba tlhaho.

элементарного материала, резерва изменчивости. Phetoho liphatseng tsa lefutso - e le mohloli oa elemental tse bonahalang pokello a iponahatsa. Ponahalo ea phetoho e na dipalopalo le probabilistic tlhaho. Ho iphetola ha lintho bohlokoa ba ho etsa joalo ke ho boloka heterogeneity phahameng tsa baahi ba tlhaho, ho kopanela sebopeho sa alleles tse sa tšoaneng le ho hlaha ha liphatsa tsa lefutso tse ncha. Phetoho liphatseng tsa lefutso thulaganyou e baka fapaneng tletse a iponahatsa a letamo khetheha phatsa ea lefutso. Ka ho phalla e sa khaotseng ho na le batho bao e seng directional le mofuta tšohanyetso.

khethehileng

происходит на протяжении существования всей жизни. Phetoho liphatseng tsa lefutso etsahala bakeng sa nako ya bophelo ba bona. Ba bang ba lengths ka etsahala makhetlo a mangata ka phelang fapaneng. matamo Gene ba le tlas'a tšusumetso ea kamehla ea ho phetoho liphatseng tsa lefutso. Sena se koala ke kgonego phahameng ba ho shoeloa ka ho palo ea phetoho unit trust ea meloko. оказывает относительно небольшое давление на отдельно взятый ген, при большом количестве последних генетическая структура подвергается существенным изменениям. Leha tshebetso phetoho liphatseng tsa lefutso e na le khatello ea ba fokolang bakeng sa phatsa ea lefutso ka bomong le palo e khōlō ea sebopeho tsa morao tjena liphatsa tsa lefutso undergoes liphetoho haholo.

The mochine 'me liphello

Ka lebaka la tšela e tsoelang pele ho na le tlhakantsuke ngata alleles. Combinatorial liphatsa tsa lefutso ho pheta-pheta o hlahloba boleng ba liphetoho liphatseng tsa lefutso. Ba phunyeletse ka genomes ntjha hlaha ka libakeng fapaneng genotypic. Palo ba tlhakantsuke joalo boitsebiso bo liphatseng tsa lefutso ka hara baahi leha e le efe e khōlō. Leha ho le joalo, ho hlokomela feela e le karolo e nyenyane ea nomoro theoretically probable ya dikgetho. Phethahatso ea likarolo tsa e laolwang ke ha e kopana le ea khethehileng oa hoo e ka bang mong le e mong ka bomong. Ntho e 'Sena ke ea bohlokoa haholo bakeng sa ho kenya tshebetsong ya kgetho ea tlhaho.

o bontša makgetheng

Liphetoho liphatseng tsa lefutso tse elemental lintho tse bonahalang ho iphetola ha lintho. Ho na le mefuta e 'maloa ea ho bona: genomic, chromosomal, liphatsa tsa lefutso. Har'a likarolo tsa liponahatso tsa liphetoho liphatseng tsa lefutso lokela abelwang karolo ya expressiveness bona. Le bonahatsa tekanyo ea ho phenotypic tiea. Ho phaella moo, liphetoho tse bang teng bath ya penetrance. Ho ke maqhubu a ea liponahatso phenotypic ka allele e mong oa ka phatsa ea lefutso ho khetheha ka baahi ka ho sa tsotellehe hore expressivity.

liphetoho liphatseng tsa lefutso phatsa ea lefutso

Li emela phetoho nucleotide tatelano. Phetoho liphatseng tsa lefutso boemong bona fetola mofuta wa ketso phatsa ea lefutso. Hangata ho na le phetoho ea limolek'hule, a etsa hore e le hantle phenotypic. A re re ka phatsa ea lefutso tse itseng ka dikhoutu itseng ntlha na TTC tsoaneng e bakeng sa acid e glutamic. Ha ho fetola feela le nucleotide lesoha, a ka etsa hore e be codon GTT. A ke ke a kenya letsoho ha ho tswakana ea acid e glutamic le glutamine. The pele le sehole limolek'hule protheine tse fapaneng, 'me mohlomong e tla etsa hore se mahareng phenotypic fapana ka botho ba hae. The boikatiso e tobileng ea allele e ncha a tla ba teng ho fihlela nako e joalo ka phetoho e ncha ke ha etsahala. Ha liphatsa tsa lefutso liphetoho liphatseng tsa lefutso ka tsela eo ho na le letoto kapa mouoane likarolo homologous. U ka etsa qeto e khutlisetsang. Ho ba teng ha allelic a iponahatsa ka phatsa ea lefutso ho khetheha le bolela hore ho ke ke ka nako e itseng ba mutated.

Ho phaella moo

Heterozygous diploid phase genotype, "e leng DNA khutsitseng" - tsohle ke sefi bakeng sa liphetoho liphatseng tsa lefutso. Ha ho degeneracy ea khoutu liphatsa tsa lefutso, ho fumanoa seoelo ya ketsahalo ea lengths bua ka reparations. dithulaganyo Mutational lokela etsahala tse phelang tse teng phelang ka maqhubu a itseng. E lokela ho ba e lekaneng ea ho etsa hore phetoho eo ka yona baahi ba ba ne ba tla bontša ho boemong ba se secha. Liphetoho liphatseng tsa lefutso tse fumanoang concentrations tse sa tšoaneng. Ba bang ba bona ba lokela ho ba le seabo mosebetsing oa ho ea histori ea tsoelo-pele ea lintho tse phelang, ho tlatsetsa hore ho thehoe taxa ncha. Liphetoho liphatseng tsa lefutso le tšekamelo ea ho ba teng ntle ho phetoho e itseng, discretely le panya ha leihlo. Phetoho ena e tla hang tsitsitseng. Ho e fetisoa ho litloholo. Liphetoho liphatseng tsa lefutso ho hlaha ha directionally. The phetoho e tšoanang ka makhetlo a 'maloa.

Boleng etsehang

Boholo ba mutants e ncha fapana haholo ka tlaase solofetsa ho feta tse hlaha / mofuta tloaelehileng. Ka tsela eo e bolela hore ho sa tšoaneng likhato, ho tloha ka tsela e poteletseng ho subvitalnogo halofo bolaeang le bolaeang boemo. Ka ho hlahloba le solofetsa tsa fofa Drosophila mutants hlaha ka liphetoho tse X chromosome, 90% ea batho ba sa e ne e le ka tlaase ho feta tloaelehileng. Ka 10% ea ka hlokomeloang boemo supervitalnoe - eketseha mafolofolo. Ka kakaretso, boleng etsehang tsa mutants le ho bonahala eka, 'me hangata fokotsehile. E tšoauoa ke utility tshebetso litšobotsi morphological le tsoalo, fisioloji solofetsa.