an error about HC call mutation genetoype and mutation type
when I use HC call mutations ，the genotype and mutation as follows:
HC_Gene.refGene Chr Start End Ref Alt III17
HAVCR1 chr5 156479568 156479568 C CGTT,* 0/1
but when I chek the bam file of the reads approve the mutation,I see that almost all reads approve the second type,why HC believe it 0/1 , not 2/2?
see the attachment?