On the other hand, there is a difference between those fraternal twins and the siblings, suggesting that there are common exposures for those fraternal twins that may not be shared as commonly with siblings alone.
Nga ana tjeter, ka nje diference midis binjake heterozigote dhe vellezerve/motrave normale, qe sugjeron qe ka ekspozime te perbashketa per binjaket heterozigot qe nuk ndahen aq shpesh midis vellezerve / motrave normal.