Final answer:
A mutation of a segmentation gene can result in abnormalities such as missing body regions, replacement of one body part with another, altered expression of homeotic genes, and incorrect establishment of body axes, but not duplication of body parts.
Step-by-step explanation:
A mutation of a segmentation gene can result in all of the following except duplication of body parts. Segmentation genes are responsible for controlling the development and patterning of body segments during embryonic development. Mutations in these genes can lead to various abnormalities such as missing body regions, replacement of one body part with another, altered expression of homeotic genes, and incorrect establishment of body axes. However, duplication of body parts is not typically associated with mutations in segmentation genes.