2. __Additional note__. In terminology of
genetics, each row and column alone of these tables is a sample from a
distribution having the essential characteristics of a backcross. Such
distributions are generated as the product of a constant gamete and a gametic
array. This provides first degree regression of offspring phenotype on number
of plus genes in the specific gamete from the array. This gene number in turn
is related linearly to phenotype per se of homozygous parents or to mean
phenotype of offspring of either homozygous or heterozygous parents. The
backcross distribution is not skewed by dominance since the distribution merely
reflects a gametic array.

Any whole table is a sample from a distribution
having essential characteristics of an F_{2}, the product of two
gametic arrays. Offspring phenotype is a second degree function of gene numbers
of two parent gametes. Such distributions are skewed by dominance since
regression is not first degree.

For simplicity present technics of treating the
whole table as a series of backcrosses rather than as an F_{2} is
proposed. But, of course, there is no fundamental difference in the two
viewpoints.

Fred H. Hull