Answer: Expression patterns of Hox genes along the head-tail axis are different in snakes than in tetrapods.
In biology epigenetics is the study of heritable phenotype changes that do not involve alterations in the DNA sequence. The Greek prefix epi-(ἐπι-“over outside of around”) in epigenetics implies features that are “on top of” or “in addition to” the traditional genetic basis for inheritance. Epigenetics most often involves changes that affect gene activity and expression but the term …
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. For example Hox genes in insects specify which appendages form on a segment (e.g. legs …
Dosage compensation is the process by which organisms equalize the expression of genes between members of different biological sexes. Across species different sexes are often characterized by different types and numbers of sex chromosomes.In order to neutralize the large difference in gene dosage produced by dif…