Because they provide new insights in the research for biotechnology and other useful resources to the knowledge of biology.
<span>Transgenic means that one or more DNA sequences from another species has been introduced by artificial means. For example, animals usually are made transgenic by having a small sequence of DNA injected into a fertilized egg or developing embryo. Transgenic plants can be made by introducing foreign DNA into a variety of different tissues.</span>
<span>the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.</span>
The nervous system would instantly cause problems for you.
Im not really sure , but it might have something to do with polar chemical compound <span />