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  • For the MN-blood group system, the frequencies of M and N alleles are 0.7 and 0.3, respectively. The expected frequency of MN-blood group bearing organisms is likely to be a. 42% b. 49% c. 9% d. 58%

For the MN-blood group system, the frequencies of M and N alleles are 0.7 and 0.3, respectively. The expected frequency of MN-blood group bearing organisms is likely to be

a. 42%

b. 49%

c. 9%

d. 58%

Answers (1)

The answer is the option (a) 42%

Explanation: This can be solved by using the binomial expression:

a^{2}+b^{2}+2ab=1

Here, M=a and N=b

M^{2}+N^{2}+2MN=0.7^{2}+0.3^{2}+2\; *\; 0.7\;*\; 0.3

                                         =0.49+0.09+0.42

In this equation ; value of 2MN=0.42=42%

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infoexpert23

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