Microsatellite markers are widely used in population genetic analyses. However, the common occurrence of null alleles and their effect on population parameters such as observed heterozygosity, genetic differentiation coefficient, etc., needs to be addressed. Two microsatellite data sets based on original and redesigned primers were used to assess the effect of null alleles on population genetic analyses of Maire yew (Taxus chinensis var. mairei). When amplified with the original primer set, both loci exhibited the presence of null alleles. Four...