I had a couple basic questions about the gvcf genotype fields:
A T, GT:AD:DP:GQ:PL:SB 0/1:42,19,0:61:99:527,0,1958,729,2015,2744:33,9,18,1
for the PL field, are the likelihoods in order of the following genotypes? AA AT TT A/nonref T/nonref nonref/nonref
the SB field it says 'Per-sample component statistics which comprise the Fisher's Exact Test to detect strand bias.' Could you explain how to interpret the four numbers?