3.3. Null allele
Presence of null alleles was tested to determine reason of heterozygote
deficit. Null alleles were detected at almost all loci across the populations
(Table 3). To determine the impact of null allele on dataset,
original data was compared with null allele frequencies adjusted data
using the ENA algorithm (Chapuis and Estoup, 2006). The effect was
minimal and did not change the significance of estimated parameters
(Table S2).