These include the question of whether DNA or RNA is the donor molecule and whether a virus or some other vector mediates the transfer.Gene transfer, gene conversion, and intragenic mosaicismMower et al. [4] sought to elucidate the process of plant-to-plant HGT by using PCR to survey mitochondrial genes in species of the parasitic plant Cuscuta (Figure ???(Figure1)1) and one of its many hosts, the