Full column set:									
CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO	FORMAT	GENOTYPE
									
Definitions (see the GATK website for detailed explanation of VCF format):									
CHROM = reference chromosome;									
POS = base position on the reference chromosome; based on FlyBase									
	annotation release 5.57 (found here - http://fb2014_03.flybase.org/)								
ID = Empty for this dataset									
REF = Reference genome allele									
ALT = Alternate allele									
QUAL = Quality value for the called allele									
FILTER = Not applicable in all-sites VCF file; no filtering criterion were									
	applied at this stage								
INFO = Typically verbose field that we reduced only to mapping quality									
	(MAPQ)								
"FORMAT = key to last column, the Genotype column. This is removed in the"									
	"reduced files, but in the full file would be: GT:AD:DP:GQ:MLPSAC:MLPSAF:PL"								
	"where GT = genotype, AD = allele depth, DP = depth, GQ = genotype"								
	"quality, MLPSAC = maximum likelihood expectation for the alternate allele"								
	"count, MLPSAF = maximum likelihood expatiation for the alternate allele"								
	"fraction, PL = Normalized, Phred-scaled likelihoods for genotypes as"								
	defined in the VCF specification								
"GENOTYPE = Genotype, depth, and likelihood information (defined above)"									
									
"For the reduced VCF, the ID, FILTER and FORMAT columns were removed. All other"									
fields remained unchanged.