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1) The alcohol dehydrogenase (Adh) gene in the fruit fly Drosophila melanogaster

ID: 192739 • Letter: 1

Question

1) The alcohol dehydrogenase (Adh) gene in the fruit fly Drosophila melanogaster has two alleles named “Fast” (F) and “Slow” (S) for the rates they migrate down the electrophoresis gel, which break down the alcohol in fermented fruit at slightly different efficiencies. In a sample, you find 6 AdhFAdhF individuals, 25 AdhFAdhS individuals, and 97 AdhSAdhS individuals.

a) Calculate genotype frequencies for the three genotypes.

b) Now calculate the allele frequencies for the two alleles, AdhF and AdhS.

Explanation / Answer

Answer:

a) Calculate genotype frequencies for the three genotypes.

b) Now calculate the allele frequencies for the two alleles, AdhF and AdhS.

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