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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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jessica90 jessica90
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11 years ago
The MN blood group in humans is under the control of a pair of codominant alleles, LM and LN. In a group of 556 individuals, the following genotypic frequencies are found:
167 MM
280 MN
109 NN
 
a) Calculate the frequency of the LM and LN alleles.

b) Test using the Chi-squared test wether the genotypic frequencies conform to hardy-weinberg distribution.

                     GENOTYPES
         MM         MN         NN      SUM

Observed #   

observed freq

expected freq

expected #

(O -E )^2/E
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AlexxAlexx
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#1
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11 years ago
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jessica90 Author
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#2
11 years ago
Wouldn't it be (O-E)^2/E?

x2=[(observed values-expected)2/expected]= (167-169)^2/169 + (109-112)^2/109 + (280-275)^2/280 =0.19
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#3
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11 years ago
yes, sorry I made a mistake. It is (observed values-expected)2/expected
jessica90 Author
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#4
11 years ago
No problem.. just making sure. Thank you so much for your help!!
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