dihibriduli Sejvareba
dihibriduli Sejvareba
dihibriduli Sejvareba
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28<br />
= rogori iqneboda miRebuli hibridis genotipi?<br />
morganma SerCeuli genebis qromosomebSi ganawilebis ori SesaZlo varianti iva-<br />
rauda:<br />
sur.3.<br />
sur.4.<br />
B<br />
b<br />
B<br />
b<br />
A<br />
a<br />
centromera<br />
A<br />
a<br />
1. alelebis ori wyvili, romlebic sxeulis fersa<br />
(A da a) da frTebis sigrZes (B da b) gansazRvravs, qro-<br />
mosomaTa sxvadasxva homologiur wyvilSia (sur. 3).<br />
2. alelebis es ori wyvili SeWidulia da qromosomaTa<br />
erT homologiur wyvilSia lokalizebuli (sur. 4).<br />
amis Semdeg man gamaanalizebeli <strong>Sejvareba</strong> Caatara,<br />
anu miRebuli hibridi orive niSniT recesiul (Sav da<br />
moklefrTian) individTan Seajvara.<br />
daadgineT, rogor Sedegebs eloda morgani cdis TiToeuli variantisTvs.<br />
am mizniT:<br />
1. sur. 3-is da sur. 4-is mixedviT orive variantisTvis SeadgineT F Taobis<br />
1<br />
hibridTa gametebis qromosomebis sqemebi (gaiTvaliswineT, rom gametaSi qromosomebis<br />
TiToeuli homologiuri wyvilidan mxolod erTi xvdeba);<br />
2. penetis cxrilis gamoyenebiT SeadgineT F Taobis hibridebis genotipebis<br />
2<br />
qromosomaTa sqemebi orive variantisTvis;<br />
3. daadgineT F Taobis hibridebis fenotipebis procentuli Tanafardoba Ti-<br />
2<br />
Toeuli variantisTvis.<br />
amgvarad, Tu mkvlevari am Sejvarebis Sedegad, mSoblebis msgavsi individebis garda,<br />
imave raodenobis axal kombinaciebs miiRebda (e. i. TiToeul kombinacias 25-25%-s),<br />
CaTvlida, rom frTebis sigrZisa da sxeulis feris ganmsazRvreli genebi qromosomaTa<br />
sxvadasxva homologiur wyvilSia. xolo Tu mxolod mSoblebis msgavs individebs miiRebda<br />
Tanabari raodenobiT (anu 50-50 %-s), CaTvlida, rom es genebi SeWidulia.<br />
morganma mravaljer Caatara aRwerili eqsperimenti, magram Tavis mier navaraudevi<br />
verc erTi Sedegi ver miiRo. mis mier miRebuli Sedegebi ase gamoiyureboda (sur. 5):