An Analytical Exploration of Epigenetic Tools and Mechanisms: With Emphasizing the Importance in Animal Breeding

Normal distribution and DNA structure-based data, have paramount role in constructing and extending animal and plant breeding models. Nowadays, it has been proven that epigenetics plays an essential role in the appearance of different traits. Epigenetics examines acceptable changes in the expression of genes those are independent of changes in the nucleotide DNA. Thus, the epigenetics with the spirit of the development of genetic models can be contrasted, because it is not based on genetic assumptions used in animal breeding. For the first time, attempts have been made to divide and explain the epigenetic mechanisms and tools in a succession and to return to the comprehension of its application in animal breeding. Through the mechanism and tools of epigenetics, DNA methylation and genomic imprinting have been identified in a relatively large range of domestic animal species. Genomic imprinting is considered to be practical in genetic modeling. But histone corrections, which affect the way the nucleosomes are located, have a relatively small contribution to researches. It seems that the future of breeding research depends to a large extent on the epigenetic understanding of traits. epigenetics is expected to have perhaps the greatest effect in elucidating the interaction between environment and genetics. Since the transgenic is the level of environmental information transmission to the available genome, there will be a possibility in the future that, by examining this epigenetic level, undesirable traits,  such as the great tail fat in some Iranian sheep breeds, can be managed. This management will require a full understanding of the transgenic.