Polymorphism characteristics of 21 microsatellite loci that amplified polymorphic and interpretable PCR products in 24 unrelated Arctocephalus gazella individuals.

aObserved heterozygosity.bExpected heterozygosity.cNegative null allele frequency values are normal using Chakarborty's estimator [31] when the null allele frequency is close to zero and sample sizes are small [64].dHardy-Weinberg equilibrium P-values could not be calculated for loci indicated by ‘na’ due to only one individual carrying the second allele.

a. 观测杂合度（Observed heterozygosity）。
b. 期望杂合度（Expected heterozygosity）。
c. 当无效等位基因频率接近零且样本量较小时，使用查克拉博蒂估算器（Chakarborty's estimator）计算得到的负无效等位基因频率值属于正常情形[31,64]。
d. 对于标记为"na"的位点，由于仅存在1个个体携带第二等位基因，无法计算其哈迪-温伯格平衡（Hardy-Weinberg equilibrium）P值。