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Kaplan Qbank USMLE



Author3 Posts
  #1

5.In a clinical study, 100 subjects are examined for a particular genetic alteration hypothesized to be related to prostate cancer. The results are shown in the table.
Genotype Number of
Controls
AA 30
AB 25
Bb 45
If A is one allele, and B is the other, which of the following is the frequency of the B allele?
A) 25/200
B) 45/200
C) 50/200
D) 90/200
E) 115/200




  #2

E???

  #3

E fore sure = (45*2+25)/200

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