The National 
  Center for Biotechnology Information (OK.... why does 
  this "national center" modify "information" with a noun, 
  viz.  Biotechnology, rather than with and adjective, like "biotechnological"?) 
   at the National Library for Medicine at the National Institutes 
  of Health (NIH) maintains a huge site with invaluable 
  information. Here are some useful links.
  -  a link 
    to a "view 
    page" or "search 
    page" that provides a series of chromosomes from the human genome. 
    A user is able to click on any chromosome and begin to explore the structure 
    and content of that chromosome.
- a link 
    to the "site 
    map" to present the huge array of programs that allow analysis of 
    genetic sequences
- a link 
    to a glossary. 
    This site is especially valuable since so much of what is presented is shielded 
    by a barely penetrable armor of arcania.