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.
Walau bagaimanapun, ada beza antara kembar tak seiras dan adik beradik biasa yang menunjukkan pendedahan sama untuk kembar tak seiras mungkin tidak dikongsi dengan adik beradik biasa.