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Question: Answered & Verified by Expert
In a population of 1000 individuals 360 belong to genotype AA, 480 to Aa, and the remaining 160 to aa, Based on this data, the frequency of allele A in the population is:
BiologyEvolutionNEETNEET 2014
Options:
  • A 0.4
  • B 0.5
  • C 0.6
  • D 0.7
Solution:
1595 Upvotes Verified Answer
The correct answer is: 0.6

According to HardyWeinberg principle: 
Frequency of dominant allele (A) = p                      
Frequency of recessive allele (a) = q 
Frequency of AA individuals = p × p = p2                  
Frequency of aa individuals = q × q = q2
Frequency of Aa individuals = 2pq                         
Total population = 1000
Frequency of AA individuals = p × p = p2 = 360/1000 = 0.36                  
Frequency of dominant allele (A) = p = 0.6  

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