highly significantp < 0.001
Descriptive Statistics of Diversity Gene diversity ( H j , see Table 1 ) is almost two times higher in the populations of cluster B (mean H j = 0.150 ; sd = 0.025) than in those of cluster A (mean H j = 0.089; sd = 0.026) and the difference in means between the two clusters is highly significant ( T (34 . 5) = 7.076, p < 0.001).