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Gene Frequency Calculation

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If 9% of an African population is born with a severe form of sickle-cell anemia (ss), what percentage of the population will be more resistant to malaria because they are heterozygous (Ss) for the sickle-cell gene?

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Solution Summary

Gene frequency calculation based on percentage of population that is homozygous for recessive trait.

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We can use the Hardy-Weinberg Equation, p2 + 2pq + q2 = 1,
to calculate genotype frequencies from known phenotype ratios. The frequency of homozygous ...

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    gene flow from migration e. all of these When studying the flow of genetic information in a population you are studying something called the allele frequency of a gene.

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    Gene map data along with interference can be used for estimation of phenotypes. Interference data helps in calculation of coefficient of coincidence.

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    c. 3 & 4 represents single cross-over between gene +(b) & +(c). Frequency of recombination for interval +(b) & +(c) is (130 + 140 + 18 + 12) / 1000 = 0.3 or 30 map unit d. 5 & 6 represents single cross over between gene a & + (b).

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  • Fruit Fly Genetics

    Total number of fruit flies = 6000 + 4000 = 10,000 Hence, frequency of recessive gene 'v' = 6000/10000 = 0.6 Frequency for dominant gene 'V' = 4000/10000 = 0.4 Here, p = 0.4 and q = 0.6 a.

  • multiple alleles in a population

    frequency-independent selection The answer is (d), as the gene pool refers to the total set of alleles for a particular gene within a population.

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    The frequency of brown alleles in this beetle population is (.2) 5. The frequency of green alleles in this population is (.8) Remember that an allele is a segment of a gene that codes for certain traits.

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