R help - Jan 2011 - R two tabales filter

hi

i have one table sireall.txt

    SNP1 SNP2 SNP3 SNP4 SNP5  SIRE1 1 -1 -1 1 -1  SIRE2 1 -1 1 1 1  SIRE3 -1
-1 1 1 0  SIRE4 -1 1 1 0 1  SIRE5 -1 1 -1 -1 1  SIRE6 0 0 0 1 -1  SIRE7 -1 0
-1 1 1  SIRE8 1 -1 NA 0 NA  SIRE9 -1 1 1 -1 -1  SIRE10 1 1 1 1 1
SIRE100 1 1 -1 1 1

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