that's an interesting photo
but i think it is by itself insufficient
to conclude the presence of multiple substrains intermixed.
other possible explanations exist that haven't been ruled out.
perhaps the pigment gene is partially damaged or
perhaps unseen environmental factors.
i think workman has it right,
as i told roger rabbit some time ago sectoring on agar
can be explained by
Quote:
|
recombine (exchange genes) during normal cell division.
|
which would be a change in the dna,
not true intermixing of distinct strains
per se
but more akin to the evolution of a single substrain
into distinct varieties.