“R” has to be a close relative of “P” and “Q”:
it’s as if “P” and “Q” got married,
and “R” is the result.
The genetic theory, of course,
is complicated,
but it would appear that
“P”‘s total genetic material
accepted only “Q”‘s tail.
Certain geneticists
have postulated that
the “P”s accepted little “R”
without much ado.
The sad truth is
that “R“‘s tail proved
totally unacceptable
to the “P” family;
happily, the “Q” family
was much more predisposed
to accept tails:
a lovely old “Q” —
Queenie, in fact —
adopted little “R“.
“It’s one of us,”
Queenie declared,
“and that’s all there is to it!”
The learning from this story:
some families let
let a little tail get in the way;
some don’t.