illustration depicts the creationist model of "kinds"
of organisms in respect to genetic potential and variation
(speciation). The center of the diagram represents the
kind as it was originally created. It is highly heterozygous
possessing a high degree of genetic variation. Moving
towards the edge of the diagram represents a lessening
of genetic potential in specific populations as natural
selection (through factors like geographic isolation)
cause specific populations of the kind to become more
and more homozygous. The result is the emergence of
different varieties of the kind as produced by limited
genetic potential within each specific population. This
may, in some cases, eventually result in a potential
loss of ability to interbreed with some or all of the
rest of the kind, such as with "Variety P"
in the lower righthand corner of the circle.