The ploidy of the individual. Should be even
and greater than 0.
Value
A list. The same elements as in get_bivalent_probs, augmented to include
more scenarios,
but with the additional element penvec. This is a logical vector that
is TRUE if the corresponding rows of probmat and pmat and
elements of lvec would be
included in the non-double-reduction-model and is FALSE otherwise.