The table shows three examples of gene transfer - Scottish Highers Biology - Question 5 - 2019

This process involves the exchange of genetic material between two organisms through mating, which can result in genetic variation but is not considered horizontal gene transfer. Horizontal gene transfer specifically refers to the transfer of genes between organisms in a manner other than traditional reproduction.

This is a clear example of horizontal gene transfer. Bacteria can transfer plasmids, which contain genetic information, to one another through processes such as conjugation. This enables them to acquire new traits and characteristics, such as antibiotic resistance.