Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. XNAs are artificial nucleic acid molecules that can work the same as DNA, created in test tube, involving DNA and RNA nucleic acids. According to gene experts, XNAs can enable researchers to make novel forms of life under laboratory conditions, revolutionizing molecular and genetic technologies. Nevertheless, it is believed that such studies will lead to unknown consequences, having enough potential to harm natural biology. Learn more about artificial nucleic acids and their impact on living organisms in this book.