"Image the genome is a book.
There are twenty-three chapters,
called CHROMOSOMES.
Each chapter contains several thousand stories, called GENES.
Each story is made up of paragraphs, called EXONS,
which are interrupted by
advertisements called INTRONS.
Each paragraph is made up of words, called C000NS.
Each word is written in letters called BASES.
There are 1 billion words in the book which makes it longer
than... 800 Bibles.".

Matt Ridley. Genome: an Autobiography of a Species in 23 Chapters. New York:
Perennial, 1999.
Mendelain inheritance