Final answer:
The Hox Gene Complex refers to a cluster of genes known as Hox genes that determine the body plan and development of an animal. mice and other vertebrates have multiple Hox gene clusters which are responsible for the evolution of more complex body types.
Step-by-step explanation:
The term "Hox Gene Complex" refers to a cluster of genes known as Hox genes, which are responsible for determining the general body plan and development of an animal. these genes encode transcription factors that control the expression of other genes. mice and other vertebrates have multiple Hox gene clusters, specifically Hox-A, Hox-B, Hox-C, and Hox-D, which are located on different chromosomes. the arrangement of these genes reflects the anterior-posterior axis of the animal's body. The duplication of Hox genes in vertebrates has allowed for the evolution of more complex body types.