Cancer Gene on #17 quest

[Cory M Wisnia]

I have a Middle school class and teach genetics. One of my students,  
after reading the article about the Breast Cancer gene on Chromosome #17 
asked me whether this was a Dominant or Recessive gene.  Since the 
article said "gene" and not genes,  and since the incidence rate for 
those that had it was 85%,  my thought was that it might be dominant 
(although I understand that Dominance and Recessiveness may be terms that 
are losing meaning now).  Anyway,  I'm interested in any response that 
can make sense to my students.

You can e-mail direct to cwisnia at mhs.mendocino.k12.ca.us

Thanks in advance!--
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||     / \|/  \  CORY  WISNIA             ||                                  
||     |(O)(O) | cwisnia at eis.calstate.edu ||         
||     \  ×   /  MENDOCINO   CA           ||
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