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#1
03-13-2013
 USMLE Forums Guru Steps History: 1+CK+CS Posts: 333 Threads: 162 Thanked 284 Times in 147 Posts Reputation: 294
Allel Frequency Calculation

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

If A is one allele and B is another, 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
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#2
03-13-2013
 USMLE Forums Veteran Steps History: 1+CK+CS Posts: 214 Threads: 29 Thanked 62 Times in 40 Posts Reputation: 72

C ?
#3
03-13-2013
 USMLE Forums Veteran Steps History: 1+CK+CS Posts: 259 Threads: 8 Thanked 115 Times in 78 Posts Reputation: 125

E

25 + 45 + 45 = 115
 The above post was thanked by: Doc4Step1 (03-13-2013)

#4
03-13-2013
 USMLE Forums Addict Steps History: Not yet Posts: 125 Threads: 17 Thanked 67 Times in 38 Posts Reputation: 77

my ansver is E
AB-HETEROZYGOUS SO 25
BB HOMOZYGOUS SO 45X2

90+25=115

 Tags Genetics-, Step-1-Questions

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