1. Each characteristic is governed by a pair
(genes). If one of this pair always expresses it self, it is
said to be a "dominant" trait. A trait which does not
express itself when paired with a dominant is said to be a
2. Parental genes for each trait are separated
another during the formation of gametes (sex cells) and
are "segregated" one from another, such that each gamete
contains only one of the pair, and each is equally likely
to occur in gametes.
3. Genes for each trait "assort independently"
of one another
during gamete formation, such that any combination of
gene combinations is equally likely to occur.
Mendel's work was lost and unrecognized until 1900, when the Dutch and German scientists Hugo de Vries and Carl Correns rediscovered and confirmed it through experimentation.