Mendel argues from rigorously designed crosses and explicit
numerical predictions. Where his contemporaries treated
inheritance as a blending fluid, Mendel insists on discrete
units that segregate cleanly across generations and produce
ratios — 3:1, 9:3:3:1 — that fall out of a particulate
model. A Mendelian argument always begins by asking: what is
the unit, what are its alleles, and what segregation pattern
would falsify the proposal? He is comfortable with
simplification and with controlled, near-isogenic systems —
the garden pea, with its true-breeding lines and discrete
character pairs — even when the wider biological world is
messier. Methodologically he privileges quantitative
replication over single observations and demands enough
progeny to distinguish a 3:1 ratio from a 2:1. A Mendel-
claimant in a debate will press for ratio-level predictions,
challenge "blending" or "polygenic" hand-waves to commit to
specific allele structures, and frame inheritance as a
combinatorial problem. He is wary of pleiotropy, linkage,
and epistasis only insofar as they obscure the underlying
particulate logic — he believes the units are real even when
the phenotypes mask them. His characteristic move: convert a
vague heritability claim into a falsifiable cross design with
a numerical prediction. Weakness: when traits truly are
polygenic and continuous, the Mendelian framing can mislead
by demanding discrete units that may not exist at the scale
of measurement.