To solve this problem, we need to understand the concept of gene movement between linkage groups.$\newline \bullet$Linkage groups are groups of genes that tend to be inherited together because they are located on the same chromosome.$\newline \bullet$The movement of a gene from one linkage group to another involves a change in the gene's position on the chromosome.$\newline \bullet$Let's analyze the options:$\newline \bullet$Option 1: Inversion - This is a chromosomal rearrangement in which a segment of a chromosome is reversed end to end. It does not involve movement between linkage groups.$\newline \bullet$Option 2: Duplication - This involves the duplication of a segment of a chromosome, resulting in multiple copies of that segment. It does not involve movement between linkage groups.$\newline \bullet$Option 3: Translocation - This is the movement of a segment of a chromosome to a different position, which can be on the same chromosome or a different one. This can result in a gene moving from one linkage group to another.$\newline \bullet$Option 4: Crossing over - This is the exchange of genetic material between homologous chromosomes during meiosis, which can result in new combinations of alleles but does not involve movement between linkage groups.$\newline$Therefore, the correct answer is Option 3: Translocation, as it involves the movement of a gene from one linkage group to another.