Though often referred to as a cross between the lemon and citron, a recent genomic analysis showed it to solely contain pomelo (Citrus maxima) and citron (Citrus medica) DNA, perhaps being an F2 hybrid.
This citrus fruit, though commonly perceived as a hybrid between lemon and citron, was found to be genetically distinct, containing solely the DNA of pomelo (Citrus maxima) and citron (Citrus medica), possibly indicating an F2 hybrid origin.