I need to get up to speed as the IT person for a new project and I think it will help if I understand what's behind the data as all the resources are bound up in genetics concepts / language.

bcftools query -f '%IDt%REFt%ALT[t%GT][t%TGT]n' ID_0298249.vcf.gz | head -1
rs9701055 C T 0/0 C/C

If the C is the ref genome and the T is the sample genome, what is the 0/0 and C/C significance?

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