Q. Which of the following genes is responsible to specify regions of the body plan of an embryo along the head-tail axis of animals? Answer:
Hox gene
Notes:
Hox genes, a subset of homeobox genes, are a group of related genes that specify regions of the body plan of an embryo along the head-tail axis of animals. Hox proteins encode and specify the characteristics of 'position', ensuring that the correct structures form in the correct places of the body.
Homeotic genes are master regulator genes that direct the development of particular body segments or structures.
When homeotic genes are overactivated or inactivated by mutations, body structures may develop in the wrong place.
Hoxgenes are found in many animals, including fruit flies, mice, and humans. Mutations in human Hox genes can cause genetic disorders.
Norin-10 and Olesen are the gene responsible for dwarfing in wheat.