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Deficiencies on Chromosome Y
In a few cases other stocks with the same deficiency are available and can be identified by searching for the deficiency symbol.
  Stock # Symbol Deleted Segment Coordinates Basis
1 736 Df(YS)bb[-] h18--h25;h18--h25
2 3805 Df(YS)bb-Su(var) h18--h25;h18--h25
3 4491 Df(YS)bb h18--h25;h18--h25