Butterflies show 3 phenotypes due to incomplete dominance at the D locus with alleles DY and DB giving green phenotype in heterozygotes and yellow and blue in homozygotes. a) A population of butterflies showed 49% yellow, and 51% blue and green. What percentage of the gametes for the next generation would contain the DB allele? b) In another population only 1% of the butterflies are blue, what is the DY allele frequency? c) If the butterflies were subject to predation by birds that could easily detect blue & yellow individuals what effect would you expect this to have on the genotype  and allele frequencies over time? Indicate possible percentages.

Human Heredity: Principles and Issues (MindTap Course List)
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ISBN:9781305251052
Author:Michael Cummings
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Chapter15: Genomes And Genomics
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Butterflies show 3 phenotypes due to incomplete dominance at the D locus with alleles DY and DB giving green phenotype in heterozygotes and yellow and blue in homozygotes.

a) A population of butterflies showed 49% yellow, and 51% blue and green. What percentage of the gametes for the next generation would contain the DB allele?

b) In another population only 1% of the butterflies are blue, what is the DY allele frequency?

c) If the butterflies were subject to predation by birds that could easily detect blue & yellow individuals what effect would you expect this to have on the genotype  and allele frequencies over time? Indicate possible percentages.

 

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