Abstract
Since the determination of the informational molecule deoxyribonucleic acid (DNA) structure by Watson and Crick in 1953, molecular biology had a fantastic development that culminated in recent times with the possibility of determining the nucleotide sequence of whole information content of various organisms. The discovery of interrupted (split) genes configuration and the discrimination of sequences called exons and introns were a key step to understanding the architecture, functioning and regulation of gene expression. This is the first article of a series that aims to survey the fundamental experiments of the discovery of various introns types. In this initial article, we describe the antecedents and the discovery of interrupted genes of pre-mRNAs that accounted for the initial mark of the description of this type of gene organization. The rescue of the history of interrupted genes discovery and description of the processes and methods involved has its importance in the origin of a wide source of techniques and analysis used in the studies of gene regulation mechanisms nowadays which has profound impact in various human activities.
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