 locus  ( genomics ‌ loo )  antey emti ?
 janyusaastram mariyu janyusaastramlo ,  locus anede ooka nirdishta janyuvu ledha genyu marker unna chromosome ‌ pai nirdishta ,  sthiira sthaanam .  prathi chromosome anek janyuvulanu kaligi umtumdi ,  prathi janyuvu vaerae sthaanam ledha sthaanaanni aakramistundi ;  maanavulalo , 23  chromosome ‌ l porthi haploid sett ‌ loo motham proteins - kooding janyuvula sanka  19,000–20,000 gaaa anchana vaeyabadindi .

 janyuvulu yugma vikalpaalu ani piluvabadee bahulha vaividhyaalanu kaligi vumdavacchu mariyu yugma vikalpam ooka nirdishta locus ‌ loo nivasistundani kudaa cheppavacchu .  ichina locus oddha oche yugma vikalpaanni kaligi umdae deployed mariyu polyploid kanaalanu aa locus ‌ ku sambandhinchi homozygus antaruu ,  ayithe ichina locus oddha vibhinna yugma vikalpaalanu kaligi unna vatini heterogigus antaruu .  nirdishta janyuvu choose telisina lockie yokka aurdar jaabitaanu genyu patam antaruu .  zean mapping anede nirdishta phinotipe ledha jiva lakshanhaanni utpatthi cheyadanki badyatha vahinche nirdishta locus ledha lokini nirnayinche procedure .  associetion mapping , " linkages dees ‌ quilibrium mapping "  ani kudaa pilustharu ,  idi parimaanaatmaka lakshana sdhaanaaniki  (QTL lu )  mapping chese paddathi ,  idi historic linkages aswasthatha yokka prayojananni pondadam dwara phinotipe ‌ lanu  ( pariseelinchadagina lakshanhaalu )  janyuroopaalaku  ( jeevula genyu rajyangam ),  an ‌ covering  .