In a population of dung beetles some individuals have a horn on their thorax, wh

Question

In a population of dung beetles some individuals have a horn on their thorax, whereas others do not. Having a horn (H) is dominant to not having a horn (h). In an African population consisting of 8, 455 specimens, 3, 128 do not have horns. Calculate the allele freque4ncies and expected genoteype frequencies. Now assume that the length of the dung beetle horn varies between homozygous (HH) individuals and heterozygous individuals (Hh) and that there is a fitness cost of 25% for having a large horn (HH) (i.e., 255 die) and a fitness cost of 10% (i.e., 10% die0 for having a short horn (Hh). Also, all of the homozygous recessive individuals (hh0 with no genotype frequencies after accounting for the deaths of some of the HH and Hh individuals?)

Explanation / Answer

Total specimen in African population=8455

Specimen do not have horn(hh)=3128

Specimen have horn=8455-3128=5327

Allele frequency will be=5327÷8455=0.63

Homozygous genotypic frequency=(0.6)2=0.36

Heterozygous genotypic frequency=2Hh=2×0.6×0.6=0.72

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