14. A population of beetles was scored for color. The frequencies of the genotyp
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Question
14.
A population of beetles was scored for color. The frequencies of the genotypes and their relative fitness values are given in the table below.
What is the average fitness for color in this population of beetles? Please round your answer correctly to 4 decimal digits.
15. What type of selection is occurring in this population?
Select one:
disruptive
directional
stabilizing
16. What is the frequency of black beetles after selection? Please round your answer correctly to 4 decimal digits.
17. What is the frequency of brown beetles after selection? Please round your answer correctly to 4 decimal digits.
18. What is the frequency of white beetles after selection? Please round your answer correctly to 4 decimal digits.
Genotype BB Bb bb Phenotype Black Brown White Frequency 0.16 0.48 0.36 Fitness 0.6 0.89 1Explanation / Answer
14) When we observe the table which contains the fitness of various color genotypes, white has highest among the color,fitness is 1, so consider as stable frequency,
Consider the average of the fitness calculated as 0.6+0.89 +1 = 2.58
The average fitness of the particular population is sum of the fitness of the population multiplied with the highest frequency = 2.58 x 0.36 = 0.9288.
15) From the above prediction the selection is identified as Directional selection , because the extreme phenotype favoured the phenotypes, which causes shifting of the allele, it is independent of the dominance of the allele.
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