A recent article titled Natural gas: A modern fuel millions of years in the making reported that the refined gas used in barbecue grills marks the last step in a process that began more than 500 million years ago. 1. But that's not so. Natural gas can be produced by adding heat and water to brown coal.
DNA sequencing is the process of determining the precise order of nucleotides within a DNA molecule.It includes any method or technology that is used to determine the order of the four basesâ adenine, guanine, cytosine, and thymine âin a strand of DNA.The advent of rapid DNA sequencing methods has greatly accelerated biological and medical research and discovery.NA sequencing is the determination of the physical order of these bases in a molecule of DNA. However, there are many other bases that may be present in a molecule. In some viruses (specifically, bacteriophage), cytosine may be replaced by hydroxy methyl or hydroxy methyl glucose cytosine.
A gene is a segment of DNA that codes for a polypeptide or for a molecule of RNA, such as a transfer RNA (tRNA) or ribosomal RNA (rRNA). The genes in the nucleus are in chromosomes. A chromosome consists of a molecule of DNA (two after replication of the DNA) and associated proteins. Genes are segments of DNA molecules.