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1. The Nature of the Gene. Author information Copyright and License information . Genes are made up of promoter regions and alternating regions of introns (noncoding sequences) and exons (coding sequences). Copyright notice. Nucleotide sequencing and other physical studies have shown that between genesthere is DNA, mostly of unknown function. The different types of gene are: (1) Pseudo-Genes (2) Overlapping Genes (3) Multi-Gene Families (4) Split Genes and (5) Cryptic Genes. Genes Are Surrounded by Other DNA. Nature of Gene: The characteristic of every organism is governed by factors of inheritance termed as genes. The production of a functional protein involves the transcription of the gene from DNA into RNA, the removal of introns and splicing together of exons, the translation of the spliced RNA sequences into a chain of amino acids, and the posttranslational modification of the protein … The size and nature of this DNA varywith the genome. Like the study of gene action, the nature of the gene itself was understood as a biochemical problem early in the twentieth century.

1 Research carried out at Brookhaven National Laboratory under the auspices of the U.S. Atomic Energy Commission. The modern definition of gene is as gene is a region of genomic st pence, corresponding to a unit of inheritance, which is associated with regulatory regions, transcribed regions and other functional sequence regions. For example, in fungi there is little, but in mammals theintergenic regions can be huge. Because chromosomes were known to be composed of proteins and nucleic acids, many geneticists proposed specific molecular mechanisms to … M. Demerec.