The process of introducing foreign DNA in to a cell by a virus or viral vector is called as transduction. It is commonly observed in bacteriophages that infect bacterial cells.
Translation is a step in protein synthesis where mRNA is translated to polypeptide chain in the protein synthesis process.
When the genome of a cell is altered/modified by direct uptake of foreign DNA through the cell membrane from surrounding is termed as transformation. The modified cells/organisms are called transformant.
Mutation occurring in a sequence due to change in purine by a pyrimidine or vice versa is termed as transversion. This process can by spontaneous or can be induced by a mutagen.