Hox gene is an example of a homeobox gene. The homeobox sequence codes for a 60 amino acid protein domain known as the homeodomain. The main role of homeodomain is to act as a switch that controls gene transcription.
(Histone modification hassome attributes of an epigenetic process, but the issue ofheritability has yet to be resolved.) This review concernsDNA methylation, focusing on the generation, inheri-tance, and biological significance of genomic methyl-ation patterns in the development of mammals.
DNA replication. In molecular biology, DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. This process occurs in all living organisms and is the basis for biological inheritance. The cell possesses the distinctive property of division, which makes replication of DNA essential. DNA is made up of a double helix of two complementary strands. During replication, these strands are separated. Each strand of the original DNA molecule then serves as a tem