Definition Of Homeotic Gene

Homeotic genes a developmental gene that specifies the anterior posterior axis as well as segment identity during the early embryonic development of certain organisms such as metazoan s.

Definition of homeotic gene. Homeotic gene any of a group of genes that control the pattern of body formation during early embryonic development of organisms. A gene that produces a usually major shift in the developmental fate of an organ or body part especially to a homologous organ or part normally found elsewhere in the organism. Mutations in homeotic genes cause displaced body parts such as antennae growing at the posterior of the fly instead of at the head. Homeotic genes often encode transcription factor proteins and these proteins affect development by regulating downstream gene networks involved in body patterning.

Homeotic gene definition noun plural. Any of various genes that determine the type or location of a body part during an organism s development especially in the early embryonic development. These genes encode proteins called transcription factors that direct cells to form various parts of the body. Any of various genes that determine the type or location of a body part during an organism s development especially in the early embryonic development of vertebrates.